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Finding the Fourth Proportional to 636,756.84, 878,710.14 and 350,270.64

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Solution

The fourth proportional to 636,756.84, 878,710.14 and 350,270.64 is: 483,365.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,756.84 : 878,710.14 = 350,270.64 : x
  2. Step 2: Convert to fraction form
    636,756.84/878,710.14 = 350,270.64/x
  3. Step 3: Cross multiply
    636,756.84x = 878,710.14 × 350,270.64
  4. Step 4: Simplify right side
    636,756.84x = 307,786,363,112.29
  5. Step 5: Solve for x
    x = 307,786,363,112.29/636,756.84
  6. Step 6: Final answer
    x = 483,365.62

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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.