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Finding the Fourth Proportional to 674,805.12, 931,230.92 and 368,882.78

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Solution

The fourth proportional to 674,805.12, 931,230.92 and 368,882.78 is: 509,058.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,805.12 : 931,230.92 = 368,882.78 : x
  2. Step 2: Convert to fraction form
    674,805.12/931,230.92 = 368,882.78/x
  3. Step 3: Cross multiply
    674,805.12x = 931,230.92 × 368,882.78
  4. Step 4: Simplify right side
    674,805.12x = 343,515,050,591.56
  5. Step 5: Solve for x
    x = 343,515,050,591.56/674,805.12
  6. Step 6: Final answer
    x = 509,058.16

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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.