Home / 912,862.20-1,369,487.70-281,839.80

Finding the Fourth Proportional to 912,862.20, 1,369,487.70 and 281,839.80

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Solution

The fourth proportional to 912,862.20, 1,369,487.70 and 281,839.80 is: 422,819.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    912,862.20 : 1,369,487.70 = 281,839.80 : x
  2. Step 2: Convert to fraction form
    912,862.20/1,369,487.70 = 281,839.80/x
  3. Step 3: Cross multiply
    912,862.20x = 1,369,487.70 × 281,839.80
  4. Step 4: Simplify right side
    912,862.20x = 385,976,139,470.46
  5. Step 5: Solve for x
    x = 385,976,139,470.46/912,862.20
  6. Step 6: Final answer
    x = 422,819.72

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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.