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Finding the Fourth Proportional to 571,284.68, 855,721.42 and 458,353.46

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Solution

The fourth proportional to 571,284.68, 855,721.42 and 458,353.46 is: 686,562.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,284.68 : 855,721.42 = 458,353.46 : x
  2. Step 2: Convert to fraction form
    571,284.68/855,721.42 = 458,353.46/x
  3. Step 3: Cross multiply
    571,284.68x = 855,721.42 × 458,353.46
  4. Step 4: Simplify right side
    571,284.68x = 392,222,873,653.11
  5. Step 5: Solve for x
    x = 392,222,873,653.11/571,284.68
  6. Step 6: Final answer
    x = 686,562.91

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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.