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Finding the Fourth Proportional to 664,069.76, 916,301.85 and 373,641.02

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Solution

The fourth proportional to 664,069.76, 916,301.85 and 373,641.02 is: 515,560.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,069.76 : 916,301.85 = 373,641.02 : x
  2. Step 2: Convert to fraction form
    664,069.76/916,301.85 = 373,641.02/x
  3. Step 3: Cross multiply
    664,069.76x = 916,301.85 × 373,641.02
  4. Step 4: Simplify right side
    664,069.76x = 342,367,953,280.38
  5. Step 5: Solve for x
    x = 342,367,953,280.38/664,069.76
  6. Step 6: Final answer
    x = 515,560.23

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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.