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Finding the Fourth Proportional to 653,761.20, 980,123.40 and 358,273.20

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Solution

The fourth proportional to 653,761.20, 980,123.40 and 358,273.20 is: 537,125.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    653,761.20 : 980,123.40 = 358,273.20 : x
  2. Step 2: Convert to fraction form
    653,761.20/980,123.40 = 358,273.20/x
  3. Step 3: Cross multiply
    653,761.20x = 980,123.40 × 358,273.20
  4. Step 4: Simplify right side
    653,761.20x = 351,151,946,912.88
  5. Step 5: Solve for x
    x = 351,151,946,912.88/653,761.20
  6. Step 6: Final answer
    x = 537,125.71

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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.