Home / 518,972.20-778,458.30-282,776.20

Finding the Fourth Proportional to 518,972.20, 778,458.30 and 282,776.20

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Solution

The fourth proportional to 518,972.20, 778,458.30 and 282,776.20 is: 424,164.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,972.20 : 778,458.30 = 282,776.20 : x
  2. Step 2: Convert to fraction form
    518,972.20/778,458.30 = 282,776.20/x
  3. Step 3: Cross multiply
    518,972.20x = 778,458.30 × 282,776.20
  4. Step 4: Simplify right side
    518,972.20x = 220,129,479,932.46
  5. Step 5: Solve for x
    x = 220,129,479,932.46/518,972.20
  6. Step 6: Final answer
    x = 424,164.30

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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.