Home / 1,230,639,086.34-1,698,010,434.18-728,598,583.44

Finding the Fourth Proportional to 1,230,639,086.34, 1,698,010,434.18 and 728,598,583.44

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Solution

The fourth proportional to 1,230,639,086.34, 1,698,010,434.18 and 728,598,583.44 is: 1,005,305,300.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,230,639,086.34 : 1,698,010,434.18 = 728,598,583.44 : x
  2. Step 2: Convert to fraction form
    1,230,639,086.34/1,698,010,434.18 = 728,598,583.44/x
  3. Step 3: Cross multiply
    1,230,639,086.34x = 1,698,010,434.18 × 728,598,583.44
  4. Step 4: Simplify right side
    1,230,639,086.34x = 1,237,167,997,009,887,488
  5. Step 5: Solve for x
    x = 1,237,167,997,009,887,488/1,230,639,086.34
  6. Step 6: Final answer
    x = 1,005,305,300.91

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Double scale
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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.