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Finding the Fourth Proportional to 532,780.69, 735,251.78 and 318,045.39

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Solution

The fourth proportional to 532,780.69, 735,251.78 and 318,045.39 is: 438,911.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    532,780.69 : 735,251.78 = 318,045.39 : x
  2. Step 2: Convert to fraction form
    532,780.69/735,251.78 = 318,045.39/x
  3. Step 3: Cross multiply
    532,780.69x = 735,251.78 × 318,045.39
  4. Step 4: Simplify right side
    532,780.69x = 233,843,437,156.21
  5. Step 5: Solve for x
    x = 233,843,437,156.21/532,780.69
  6. Step 6: Final answer
    x = 438,911.25

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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.