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Finding the Fourth Proportional to 627,478.92, 865,926.41 and 340,998.98

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Solution

The fourth proportional to 627,478.92, 865,926.41 and 340,998.98 is: 470,581.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,478.92 : 865,926.41 = 340,998.98 : x
  2. Step 2: Convert to fraction form
    627,478.92/865,926.41 = 340,998.98/x
  3. Step 3: Cross multiply
    627,478.92x = 865,926.41 × 340,998.98
  4. Step 4: Simplify right side
    627,478.92x = 295,280,016,530.44
  5. Step 5: Solve for x
    x = 295,280,016,530.44/627,478.92
  6. Step 6: Final answer
    x = 470,581.57

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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.