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Finding the Fourth Proportional to 636,884.75, 878,164.61 and 507,722.24

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Solution

The fourth proportional to 636,884.75, 878,164.61 and 507,722.24 is: 700,069.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,884.75 : 878,164.61 = 507,722.24 : x
  2. Step 2: Convert to fraction form
    636,884.75/878,164.61 = 507,722.24/x
  3. Step 3: Cross multiply
    636,884.75x = 878,164.61 × 507,722.24
  4. Step 4: Simplify right side
    636,884.75x = 445,863,703,962.70
  5. Step 5: Solve for x
    x = 445,863,703,962.70/636,884.75
  6. Step 6: Final answer
    x = 700,069.68

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Double scale
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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.