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Finding the Fourth Proportional to 636,549.20, 878,420.36 and 350,069.25

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Solution

The fourth proportional to 636,549.20, 878,420.36 and 350,069.25 is: 483,085.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,549.20 : 878,420.36 = 350,069.25 : x
  2. Step 2: Convert to fraction form
    636,549.20/878,420.36 = 350,069.25/x
  3. Step 3: Cross multiply
    636,549.20x = 878,420.36 × 350,069.25
  4. Step 4: Simplify right side
    636,549.20x = 307,507,954,859.58
  5. Step 5: Solve for x
    x = 307,507,954,859.58/636,549.20
  6. Step 6: Final answer
    x = 483,085.92

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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.