Home / 769,127.20-1,153,690.80-454,199.20

Finding the Fourth Proportional to 769,127.20, 1,153,690.80 and 454,199.20

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Solution

The fourth proportional to 769,127.20, 1,153,690.80 and 454,199.20 is: 681,298.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    769,127.20 : 1,153,690.80 = 454,199.20 : x
  2. Step 2: Convert to fraction form
    769,127.20/1,153,690.80 = 454,199.20/x
  3. Step 3: Cross multiply
    769,127.20x = 1,153,690.80 × 454,199.20
  4. Step 4: Simplify right side
    769,127.20x = 524,005,438,407.36
  5. Step 5: Solve for x
    x = 524,005,438,407.36/769,127.20
  6. Step 6: Final answer
    x = 681,298.80

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Double scale
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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.