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Finding the Fourth Proportional to 671,790.72, 925,990.68 and 453,931.38

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Solution

The fourth proportional to 671,790.72, 925,990.68 and 453,931.38 is: 625,695.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    671,790.72 : 925,990.68 = 453,931.38 : x
  2. Step 2: Convert to fraction form
    671,790.72/925,990.68 = 453,931.38/x
  3. Step 3: Cross multiply
    671,790.72x = 925,990.68 × 453,931.38
  4. Step 4: Simplify right side
    671,790.72x = 420,336,227,239.54
  5. Step 5: Solve for x
    x = 420,336,227,239.54/671,790.72
  6. Step 6: Final answer
    x = 625,695.20

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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.