Home / 793,156,821.20-1,189,735,231.80-640,101,813.20

Finding the Fourth Proportional to 793,156,821.20, 1,189,735,231.80 and 640,101,813.20

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Solution

The fourth proportional to 793,156,821.20, 1,189,735,231.80 and 640,101,813.20 is: 960,152,719.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    793,156,821.20 : 1,189,735,231.80 = 640,101,813.20 : x
  2. Step 2: Convert to fraction form
    793,156,821.20/1,189,735,231.80 = 640,101,813.20/x
  3. Step 3: Cross multiply
    793,156,821.20x = 1,189,735,231.80 × 640,101,813.20
  4. Step 4: Simplify right side
    793,156,821.20x = 761,551,679,103,102,336
  5. Step 5: Solve for x
    x = 761,551,679,103,102,336/793,156,821.20
  6. Step 6: Final answer
    x = 960,152,719.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.