Home / 519,934.60-779,901.90-425,456.20

Finding the Fourth Proportional to 519,934.60, 779,901.90 and 425,456.20

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Solution

The fourth proportional to 519,934.60, 779,901.90 and 425,456.20 is: 638,184.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,934.60 : 779,901.90 = 425,456.20 : x
  2. Step 2: Convert to fraction form
    519,934.60/779,901.90 = 425,456.20/x
  3. Step 3: Cross multiply
    519,934.60x = 779,901.90 × 425,456.20
  4. Step 4: Simplify right side
    519,934.60x = 331,814,098,746.78
  5. Step 5: Solve for x
    x = 331,814,098,746.78/519,934.60
  6. Step 6: Final answer
    x = 638,184.30

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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.