Home / 1,387,724.20-1,915,132.51-843,769.91

Finding the Fourth Proportional to 1,387,724.20, 1,915,132.51 and 843,769.91

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Solution

The fourth proportional to 1,387,724.20, 1,915,132.51 and 843,769.91 is: 1,164,446.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,387,724.20 : 1,915,132.51 = 843,769.91 : x
  2. Step 2: Convert to fraction form
    1,387,724.20/1,915,132.51 = 843,769.91/x
  3. Step 3: Cross multiply
    1,387,724.20x = 1,915,132.51 × 843,769.91
  4. Step 4: Simplify right side
    1,387,724.20x = 1,615,931,191,443.32
  5. Step 5: Solve for x
    x = 1,615,931,191,443.32/1,387,724.20
  6. Step 6: Final answer
    x = 1,164,446.94

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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.