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Finding the Fourth Proportional to 487,248.67, 729,101.40 and 402,218.11

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Solution

The fourth proportional to 487,248.67, 729,101.40 and 402,218.11 is: 601,864.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,248.67 : 729,101.40 = 402,218.11 : x
  2. Step 2: Convert to fraction form
    487,248.67/729,101.40 = 402,218.11/x
  3. Step 3: Cross multiply
    487,248.67x = 729,101.40 × 402,218.11
  4. Step 4: Simplify right side
    487,248.67x = 293,257,787,106.35
  5. Step 5: Solve for x
    x = 293,257,787,106.35/487,248.67
  6. Step 6: Final answer
    x = 601,864.73

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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.