Home / 527,155.20-790,732.80-427,622.40

Finding the Fourth Proportional to 527,155.20, 790,732.80 and 427,622.40

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Solution

The fourth proportional to 527,155.20, 790,732.80 and 427,622.40 is: 641,433.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,155.20 : 790,732.80 = 427,622.40 : x
  2. Step 2: Convert to fraction form
    527,155.20/790,732.80 = 427,622.40/x
  3. Step 3: Cross multiply
    527,155.20x = 790,732.80 × 427,622.40
  4. Step 4: Simplify right side
    527,155.20x = 338,135,057,694.72
  5. Step 5: Solve for x
    x = 338,135,057,694.72/527,155.20
  6. Step 6: Final answer
    x = 641,433.60

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Similar ratio
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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.