Home / 753,142.60-1,129,713.90-254,499.40

Finding the Fourth Proportional to 753,142.60, 1,129,713.90 and 254,499.40

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Solution

The fourth proportional to 753,142.60, 1,129,713.90 and 254,499.40 is: 381,749.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    753,142.60 : 1,129,713.90 = 254,499.40 : x
  2. Step 2: Convert to fraction form
    753,142.60/1,129,713.90 = 254,499.40/x
  3. Step 3: Cross multiply
    753,142.60x = 1,129,713.90 × 254,499.40
  4. Step 4: Simplify right side
    753,142.60x = 287,511,509,721.66
  5. Step 5: Solve for x
    x = 287,511,509,721.66/753,142.60
  6. Step 6: Final answer
    x = 381,749.10

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Similar ratio
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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.