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Finding the Fourth Proportional to 519,867.42, 779,801.13 and 220,341.30

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Solution

The fourth proportional to 519,867.42, 779,801.13 and 220,341.30 is: 330,511.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,867.42 : 779,801.13 = 220,341.30 : x
  2. Step 2: Convert to fraction form
    519,867.42/779,801.13 = 220,341.30/x
  3. Step 3: Cross multiply
    519,867.42x = 779,801.13 × 220,341.30
  4. Step 4: Simplify right side
    519,867.42x = 171,822,394,725.67
  5. Step 5: Solve for x
    x = 171,822,394,725.67/519,867.42
  6. Step 6: Final answer
    x = 330,511.95

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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.