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Finding the Fourth Proportional to 585,431.52, 807,896.28 and 317,159.52

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Solution

The fourth proportional to 585,431.52, 807,896.28 and 317,159.52 is: 437,680.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    585,431.52 : 807,896.28 = 317,159.52 : x
  2. Step 2: Convert to fraction form
    585,431.52/807,896.28 = 317,159.52/x
  3. Step 3: Cross multiply
    585,431.52x = 807,896.28 × 317,159.52
  4. Step 4: Simplify right side
    585,431.52x = 256,231,996,374.59
  5. Step 5: Solve for x
    x = 256,231,996,374.59/585,431.52
  6. Step 6: Final answer
    x = 437,680.56

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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.