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Finding the Fourth Proportional to 632,278.62, 872,562.96 and 345,818.10

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Solution

The fourth proportional to 632,278.62, 872,562.96 and 345,818.10 is: 477,239.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    632,278.62 : 872,562.96 = 345,818.10 : x
  2. Step 2: Convert to fraction form
    632,278.62/872,562.96 = 345,818.10/x
  3. Step 3: Cross multiply
    632,278.62x = 872,562.96 × 345,818.10
  4. Step 4: Simplify right side
    632,278.62x = 301,748,064,957.58
  5. Step 5: Solve for x
    x = 301,748,064,957.58/632,278.62
  6. Step 6: Final answer
    x = 477,239.08

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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.