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Finding the Fourth Proportional to 521,912.92, 720,242.58 and 292,470.76

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Solution

The fourth proportional to 521,912.92, 720,242.58 and 292,470.76 is: 403,611.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,912.92 : 720,242.58 = 292,470.76 : x
  2. Step 2: Convert to fraction form
    521,912.92/720,242.58 = 292,470.76/x
  3. Step 3: Cross multiply
    521,912.92x = 720,242.58 × 292,470.76
  4. Step 4: Simplify right side
    521,912.92x = 210,649,894,756.96
  5. Step 5: Solve for x
    x = 210,649,894,756.96/521,912.92
  6. Step 6: Final answer
    x = 403,611.19

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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.