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Finding the Fourth Proportional to 502,448.48, 693,417.48 and 287,655.92

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Solution

The fourth proportional to 502,448.48, 693,417.48 and 287,655.92 is: 396,987.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    502,448.48 : 693,417.48 = 287,655.92 : x
  2. Step 2: Convert to fraction form
    502,448.48/693,417.48 = 287,655.92/x
  3. Step 3: Cross multiply
    502,448.48x = 693,417.48 × 287,655.92
  4. Step 4: Simplify right side
    502,448.48x = 199,465,643,153.48
  5. Step 5: Solve for x
    x = 199,465,643,153.48/502,448.48
  6. Step 6: Final answer
    x = 396,987.26

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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.