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Finding the Fourth Proportional to 884,359.80, 1,326,820.11 and 315,728.70

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Solution

The fourth proportional to 884,359.80, 1,326,820.11 and 315,728.70 is: 473,693.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    884,359.80 : 1,326,820.11 = 315,728.70 : x
  2. Step 2: Convert to fraction form
    884,359.80/1,326,820.11 = 315,728.70/x
  3. Step 3: Cross multiply
    884,359.80x = 1,326,820.11 × 315,728.70
  4. Step 4: Simplify right side
    884,359.80x = 418,915,188,464.16
  5. Step 5: Solve for x
    x = 418,915,188,464.16/884,359.80
  6. Step 6: Final answer
    x = 473,693.16

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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.