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Finding the Fourth Proportional to 664,098.80, 916,452.05 and 377,618.87

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Solution

The fourth proportional to 664,098.80, 916,452.05 and 377,618.87 is: 521,111.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,098.80 : 916,452.05 = 377,618.87 : x
  2. Step 2: Convert to fraction form
    664,098.80/916,452.05 = 377,618.87/x
  3. Step 3: Cross multiply
    664,098.80x = 916,452.05 × 377,618.87
  4. Step 4: Simplify right side
    664,098.80x = 346,069,587,933.22
  5. Step 5: Solve for x
    x = 346,069,587,933.22/664,098.80
  6. Step 6: Final answer
    x = 521,111.60

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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.