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Finding the Fourth Proportional to 542,423.76, 812,717.05 and 328,545.33

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Solution

The fourth proportional to 542,423.76, 812,717.05 and 328,545.33 is: 492,261.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,423.76 : 812,717.05 = 328,545.33 : x
  2. Step 2: Convert to fraction form
    542,423.76/812,717.05 = 328,545.33/x
  3. Step 3: Cross multiply
    542,423.76x = 812,717.05 × 328,545.33
  4. Step 4: Simplify right side
    542,423.76x = 267,014,391,388.88
  5. Step 5: Solve for x
    x = 267,014,391,388.88/542,423.76
  6. Step 6: Final answer
    x = 492,261.61

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.