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Finding the Fourth Proportional to 530,468.26, 732,055.53 and 288,757.78

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Solution

The fourth proportional to 530,468.26, 732,055.53 and 288,757.78 is: 398,490.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,468.26 : 732,055.53 = 288,757.78 : x
  2. Step 2: Convert to fraction form
    530,468.26/732,055.53 = 288,757.78/x
  3. Step 3: Cross multiply
    530,468.26x = 732,055.53 × 288,757.78
  4. Step 4: Simplify right side
    530,468.26x = 211,386,729,679.52
  5. Step 5: Solve for x
    x = 211,386,729,679.52/530,468.26
  6. Step 6: Final answer
    x = 398,490.82

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1.5x scale

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.