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Finding the Fourth Proportional to 674,023.68, 930,134.88 and 372,211.20

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Solution

The fourth proportional to 674,023.68, 930,134.88 and 372,211.20 is: 513,641.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,023.68 : 930,134.88 = 372,211.20 : x
  2. Step 2: Convert to fraction form
    674,023.68/930,134.88 = 372,211.20/x
  3. Step 3: Cross multiply
    674,023.68x = 930,134.88 × 372,211.20
  4. Step 4: Simplify right side
    674,023.68x = 346,206,619,846.66
  5. Step 5: Solve for x
    x = 346,206,619,846.66/674,023.68
  6. Step 6: Final answer
    x = 513,641.63

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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.