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Finding the Fourth Proportional to 720,892.24, 994,791.12 and 398,582.96

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Solution

The fourth proportional to 720,892.24, 994,791.12 and 398,582.96 is: 550,022.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,892.24 : 994,791.12 = 398,582.96 : x
  2. Step 2: Convert to fraction form
    720,892.24/994,791.12 = 398,582.96/x
  3. Step 3: Cross multiply
    720,892.24x = 994,791.12 × 398,582.96
  4. Step 4: Simplify right side
    720,892.24x = 396,506,789,191.32
  5. Step 5: Solve for x
    x = 396,506,789,191.32/720,892.24
  6. Step 6: Final answer
    x = 550,022.27

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1.5x scale

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.