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Finding the Fourth Proportional to 530,438.97, 732,022.19 and 288,737.80

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Solution

The fourth proportional to 530,438.97, 732,022.19 and 288,737.80 is: 398,467.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,438.97 : 732,022.19 = 288,737.80 : x
  2. Step 2: Convert to fraction form
    530,438.97/732,022.19 = 288,737.80/x
  3. Step 3: Cross multiply
    530,438.97x = 732,022.19 × 288,737.80
  4. Step 4: Simplify right side
    530,438.97x = 211,362,476,691.78
  5. Step 5: Solve for x
    x = 211,362,476,691.78/530,438.97
  6. Step 6: Final answer
    x = 398,467.10

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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.