Home / 878,470.20-1,317,705.30-873,221.40

Finding the Fourth Proportional to 878,470.20, 1,317,705.30 and 873,221.40

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Solution

The fourth proportional to 878,470.20, 1,317,705.30 and 873,221.40 is: 1,309,832.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,470.20 : 1,317,705.30 = 873,221.40 : x
  2. Step 2: Convert to fraction form
    878,470.20/1,317,705.30 = 873,221.40/x
  3. Step 3: Cross multiply
    878,470.20x = 1,317,705.30 × 873,221.40
  4. Step 4: Simplify right side
    878,470.20x = 1,150,648,466,853.42
  5. Step 5: Solve for x
    x = 1,150,648,466,853.42/878,470.20
  6. Step 6: Final answer
    x = 1,309,832.10

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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.