Home / 809,722.20-1,215,101.70-472,762.20

Finding the Fourth Proportional to 809,722.20, 1,215,101.70 and 472,762.20

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Solution

The fourth proportional to 809,722.20, 1,215,101.70 and 472,762.20 is: 709,445.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,722.20 : 1,215,101.70 = 472,762.20 : x
  2. Step 2: Convert to fraction form
    809,722.20/1,215,101.70 = 472,762.20/x
  3. Step 3: Cross multiply
    809,722.20x = 1,215,101.70 × 472,762.20
  4. Step 4: Simplify right side
    809,722.20x = 574,454,152,915.74
  5. Step 5: Solve for x
    x = 574,454,152,915.74/809,722.20
  6. Step 6: Final answer
    x = 709,445.97

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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.