Home / 812,864.52-1,121,740.92-450,287.28

Finding the Fourth Proportional to 812,864.52, 1,121,740.92 and 450,287.28

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Solution

The fourth proportional to 812,864.52, 1,121,740.92 and 450,287.28 is: 621,389.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,864.52 : 1,121,740.92 = 450,287.28 : x
  2. Step 2: Convert to fraction form
    812,864.52/1,121,740.92 = 450,287.28/x
  3. Step 3: Cross multiply
    812,864.52x = 1,121,740.92 × 450,287.28
  4. Step 4: Simplify right side
    812,864.52x = 505,105,667,731.50
  5. Step 5: Solve for x
    x = 505,105,667,731.50/812,864.52
  6. Step 6: Final answer
    x = 621,389.73

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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.