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Finding the Fourth Proportional to 718,242.50, 991,177.62 and 395,945.48

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Solution

The fourth proportional to 718,242.50, 991,177.62 and 395,945.48 is: 546,406.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,242.50 : 991,177.62 = 395,945.48 : x
  2. Step 2: Convert to fraction form
    718,242.50/991,177.62 = 395,945.48/x
  3. Step 3: Cross multiply
    718,242.50x = 991,177.62 × 395,945.48
  4. Step 4: Simplify right side
    718,242.50x = 392,452,298,516.16
  5. Step 5: Solve for x
    x = 392,452,298,516.16/718,242.50
  6. Step 6: Final answer
    x = 546,406.40

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.