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Finding the Fourth Proportional to 664,726.40, 995,955.12 and 365,457.60

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Solution

The fourth proportional to 664,726.40, 995,955.12 and 365,457.60 is: 547,562.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,726.40 : 995,955.12 = 365,457.60 : x
  2. Step 2: Convert to fraction form
    664,726.40/995,955.12 = 365,457.60/x
  3. Step 3: Cross multiply
    664,726.40x = 995,955.12 × 365,457.60
  4. Step 4: Simplify right side
    664,726.40x = 363,979,367,862.91
  5. Step 5: Solve for x
    x = 363,979,367,862.91/664,726.40
  6. Step 6: Final answer
    x = 547,562.68

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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.