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Finding the Fourth Proportional to 530,439.78, 732,022.70 and 326,608.32

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Solution

The fourth proportional to 530,439.78, 732,022.70 and 326,608.32 is: 450,729.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,439.78 : 732,022.70 = 326,608.32 : x
  2. Step 2: Convert to fraction form
    530,439.78/732,022.70 = 326,608.32/x
  3. Step 3: Cross multiply
    530,439.78x = 732,022.70 × 326,608.32
  4. Step 4: Simplify right side
    530,439.78x = 239,084,704,248.86
  5. Step 5: Solve for x
    x = 239,084,704,248.86/530,439.78
  6. Step 6: Final answer
    x = 450,729.21

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Similar ratio
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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.