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Finding the Fourth Proportional to 733,640.70, 1,101,007.80 and 378,471.90

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Solution

The fourth proportional to 733,640.70, 1,101,007.80 and 378,471.90 is: 567,989.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    733,640.70 : 1,101,007.80 = 378,471.90 : x
  2. Step 2: Convert to fraction form
    733,640.70/1,101,007.80 = 378,471.90/x
  3. Step 3: Cross multiply
    733,640.70x = 1,101,007.80 × 378,471.90
  4. Step 4: Simplify right side
    733,640.70x = 416,700,513,980.82
  5. Step 5: Solve for x
    x = 416,700,513,980.82/733,640.70
  6. Step 6: Final answer
    x = 567,989.91

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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.