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Finding the Fourth Proportional to 532,398.62, 797,789.85 and 390,338.45

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Solution

The fourth proportional to 532,398.62, 797,789.85 and 390,338.45 is: 584,915.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    532,398.62 : 797,789.85 = 390,338.45 : x
  2. Step 2: Convert to fraction form
    532,398.62/797,789.85 = 390,338.45/x
  3. Step 3: Cross multiply
    532,398.62x = 797,789.85 × 390,338.45
  4. Step 4: Simplify right side
    532,398.62x = 311,408,049,485.78
  5. Step 5: Solve for x
    x = 311,408,049,485.78/532,398.62
  6. Step 6: Final answer
    x = 584,915.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.