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Finding the Fourth Proportional to 530,496.61, 732,085.40 and 288,781.02

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Solution

The fourth proportional to 530,496.61, 732,085.40 and 288,781.02 is: 398,517.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,496.61 : 732,085.40 = 288,781.02 : x
  2. Step 2: Convert to fraction form
    530,496.61/732,085.40 = 288,781.02/x
  3. Step 3: Cross multiply
    530,496.61x = 732,085.40 × 288,781.02
  4. Step 4: Simplify right side
    530,496.61x = 211,412,369,261.06
  5. Step 5: Solve for x
    x = 211,412,369,261.06/530,496.61
  6. Step 6: Final answer
    x = 398,517.85

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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.