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Finding the Fourth Proportional to 931,805.20, 1,397,707.80 and 888,502.60

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Solution

The fourth proportional to 931,805.20, 1,397,707.80 and 888,502.60 is: 1,332,753.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    931,805.20 : 1,397,707.80 = 888,502.60 : x
  2. Step 2: Convert to fraction form
    931,805.20/1,397,707.80 = 888,502.60/x
  3. Step 3: Cross multiply
    931,805.20x = 1,397,707.80 × 888,502.60
  4. Step 4: Simplify right side
    931,805.20x = 1,241,867,014,340.28
  5. Step 5: Solve for x
    x = 1,241,867,014,340.28/931,805.20
  6. Step 6: Final answer
    x = 1,332,753.90

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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.