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Finding the Fourth Proportional to 658,419.10, 987,956.70 and 374,327.80

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Solution

The fourth proportional to 658,419.10, 987,956.70 and 374,327.80 is: 561,678.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,419.10 : 987,956.70 = 374,327.80 : x
  2. Step 2: Convert to fraction form
    658,419.10/987,956.70 = 374,327.80/x
  3. Step 3: Cross multiply
    658,419.10x = 987,956.70 × 374,327.80
  4. Step 4: Simplify right side
    658,419.10x = 369,819,658,006.26
  5. Step 5: Solve for x
    x = 369,819,658,006.26/658,419.10
  6. Step 6: Final answer
    x = 561,678.20

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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.