Home / 840,358.40-1,159,665.92-500,820.48

Finding the Fourth Proportional to 840,358.40, 1,159,665.92 and 500,820.48

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Solution

The fourth proportional to 840,358.40, 1,159,665.92 and 500,820.48 is: 691,115.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    840,358.40 : 1,159,665.92 = 500,820.48 : x
  2. Step 2: Convert to fraction form
    840,358.40/1,159,665.92 = 500,820.48/x
  3. Step 3: Cross multiply
    840,358.40x = 1,159,665.92 × 500,820.48
  4. Step 4: Simplify right side
    840,358.40x = 580,784,442,694.04
  5. Step 5: Solve for x
    x = 580,784,442,694.04/840,358.40
  6. Step 6: Final answer
    x = 691,115.18

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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.