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Finding the Fourth Proportional to 636,460.29, 878,318.33 and 349,998.93

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Solution

The fourth proportional to 636,460.29, 878,318.33 and 349,998.93 is: 483,000.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,460.29 : 878,318.33 = 349,998.93 : x
  2. Step 2: Convert to fraction form
    636,460.29/878,318.33 = 349,998.93/x
  3. Step 3: Cross multiply
    636,460.29x = 878,318.33 × 349,998.93
  4. Step 4: Simplify right side
    636,460.29x = 307,410,473,949.39
  5. Step 5: Solve for x
    x = 307,410,473,949.39/636,460.29
  6. Step 6: Final answer
    x = 483,000.24

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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.