Home / 912,589.60-1,369,039.60-281,385.76

Finding the Fourth Proportional to 912,589.60, 1,369,039.60 and 281,385.76

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Solution

The fourth proportional to 912,589.60, 1,369,039.60 and 281,385.76 is: 422,126.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    912,589.60 : 1,369,039.60 = 281,385.76 : x
  2. Step 2: Convert to fraction form
    912,589.60/1,369,039.60 = 281,385.76/x
  3. Step 3: Cross multiply
    912,589.60x = 1,369,039.60 × 281,385.76
  4. Step 4: Simplify right side
    912,589.60x = 385,228,248,316.10
  5. Step 5: Solve for x
    x = 385,228,248,316.10/912,589.60
  6. Step 6: Final answer
    x = 422,126.49

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1.5x scale

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.