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Finding the Fourth Proportional to 636,549.95, 878,421.39 and 350,070

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Solution

The fourth proportional to 636,549.95, 878,421.39 and 350,070 is: 483,086.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,549.95 : 878,421.39 = 350,070 : x
  2. Step 2: Convert to fraction form
    636,549.95/878,421.39 = 350,070/x
  3. Step 3: Cross multiply
    636,549.95x = 878,421.39 × 350,070
  4. Step 4: Simplify right side
    636,549.95x = 307,508,975,997.30
  5. Step 5: Solve for x
    x = 307,508,975,997.30/636,549.95
  6. Step 6: Final answer
    x = 483,086.96

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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.