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Finding the Fourth Proportional to 485,691.17, 670,438.58 and 365,182.47

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Solution

The fourth proportional to 485,691.17, 670,438.58 and 365,182.47 is: 504,090.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,691.17 : 670,438.58 = 365,182.47 : x
  2. Step 2: Convert to fraction form
    485,691.17/670,438.58 = 365,182.47/x
  3. Step 3: Cross multiply
    485,691.17x = 670,438.58 × 365,182.47
  4. Step 4: Simplify right side
    485,691.17x = 244,832,414,801.78
  5. Step 5: Solve for x
    x = 244,832,414,801.78/485,691.17
  6. Step 6: Final answer
    x = 504,090.73

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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.