Home / 1,076,890,220.16-1,486,213,423.20-636,998,789.76

Finding the Fourth Proportional to 1,076,890,220.16, 1,486,213,423.20 and 636,998,789.76

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Solution

The fourth proportional to 1,076,890,220.16, 1,486,213,423.20 and 636,998,789.76 is: 879,120,391.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,076,890,220.16 : 1,486,213,423.20 = 636,998,789.76 : x
  2. Step 2: Convert to fraction form
    1,076,890,220.16/1,486,213,423.20 = 636,998,789.76/x
  3. Step 3: Cross multiply
    1,076,890,220.16x = 1,486,213,423.20 × 636,998,789.76
  4. Step 4: Simplify right side
    1,076,890,220.16x = 946,716,151,903,466,752
  5. Step 5: Solve for x
    x = 946,716,151,903,466,752/1,076,890,220.16
  6. Step 6: Final answer
    x = 879,120,391.46

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Half scale
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Double scale
Find fourth proportional to 1,076,890,221.16, 1,486,213,424.58 and 636,998,790.76
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.