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Finding the Fourth Proportional to 636,273.46, 878,074.14 and 349,800.76

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Solution

The fourth proportional to 636,273.46, 878,074.14 and 349,800.76 is: 482,734.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,273.46 : 878,074.14 = 349,800.76 : x
  2. Step 2: Convert to fraction form
    636,273.46/878,074.14 = 349,800.76/x
  3. Step 3: Cross multiply
    636,273.46x = 878,074.14 × 349,800.76
  4. Step 4: Simplify right side
    636,273.46x = 307,151,001,508.35
  5. Step 5: Solve for x
    x = 307,151,001,508.35/636,273.46
  6. Step 6: Final answer
    x = 482,734.27

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Half scale
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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.