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Finding the Fourth Proportional to 636,069.70, 954,104.55 and 387,237.70

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Solution

The fourth proportional to 636,069.70, 954,104.55 and 387,237.70 is: 580,856.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,069.70 : 954,104.55 = 387,237.70 : x
  2. Step 2: Convert to fraction form
    636,069.70/954,104.55 = 387,237.70/x
  3. Step 3: Cross multiply
    636,069.70x = 954,104.55 × 387,237.70
  4. Step 4: Simplify right side
    636,069.70x = 369,465,251,501.54
  5. Step 5: Solve for x
    x = 369,465,251,501.54/636,069.70
  6. Step 6: Final answer
    x = 580,856.55

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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.