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Finding the Fourth Proportional to 664,461.41, 916,909.17 and 374,057.97

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Solution

The fourth proportional to 664,461.41, 916,909.17 and 374,057.97 is: 516,173.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,461.41 : 916,909.17 = 374,057.97 : x
  2. Step 2: Convert to fraction form
    664,461.41/916,909.17 = 374,057.97/x
  3. Step 3: Cross multiply
    664,461.41x = 916,909.17 × 374,057.97
  4. Step 4: Simplify right side
    664,461.41x = 342,977,182,804.59
  5. Step 5: Solve for x
    x = 342,977,182,804.59/664,461.41
  6. Step 6: Final answer
    x = 516,173.22

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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.