Home / 1,429,115.64-1,972,380.78-817,397.16

Finding the Fourth Proportional to 1,429,115.64, 1,972,380.78 and 817,397.16

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Solution

The fourth proportional to 1,429,115.64, 1,972,380.78 and 817,397.16 is: 1,128,123.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,429,115.64 : 1,972,380.78 = 817,397.16 : x
  2. Step 2: Convert to fraction form
    1,429,115.64/1,972,380.78 = 817,397.16/x
  3. Step 3: Cross multiply
    1,429,115.64x = 1,972,380.78 × 817,397.16
  4. Step 4: Simplify right side
    1,429,115.64x = 1,612,218,448,010.59
  5. Step 5: Solve for x
    x = 1,612,218,448,010.59/1,429,115.64
  6. Step 6: Final answer
    x = 1,128,123.16

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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.