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Finding the Fourth Proportional to 636,759.70, 955,139.55 and 636,759.70

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Solution

The fourth proportional to 636,759.70, 955,139.55 and 636,759.70 is: 955,139.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,759.70 : 955,139.55 = 636,759.70 : x
  2. Step 2: Convert to fraction form
    636,759.70/955,139.55 = 636,759.70/x
  3. Step 3: Cross multiply
    636,759.70x = 955,139.55 × 636,759.70
  4. Step 4: Simplify right side
    636,759.70x = 608,194,373,316.14
  5. Step 5: Solve for x
    x = 608,194,373,316.14/636,759.70
  6. Step 6: Final answer
    x = 955,139.55

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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.