Home / 1,238,713.20-1,857,632.40-440,020.80

Finding the Fourth Proportional to 1,238,713.20, 1,857,632.40 and 440,020.80

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Solution

The fourth proportional to 1,238,713.20, 1,857,632.40 and 440,020.80 is: 659,875.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,238,713.20 : 1,857,632.40 = 440,020.80 : x
  2. Step 2: Convert to fraction form
    1,238,713.20/1,857,632.40 = 440,020.80/x
  3. Step 3: Cross multiply
    1,238,713.20x = 1,857,632.40 × 440,020.80
  4. Step 4: Simplify right side
    1,238,713.20x = 817,396,894,753.92
  5. Step 5: Solve for x
    x = 817,396,894,753.92/1,238,713.20
  6. Step 6: Final answer
    x = 659,875.82

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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.