Home / 638,127.52-880,621.91-351,657.88

Finding the Fourth Proportional to 638,127.52, 880,621.91 and 351,657.88

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Solution

The fourth proportional to 638,127.52, 880,621.91 and 351,657.88 is: 485,291.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,127.52 : 880,621.91 = 351,657.88 : x
  2. Step 2: Convert to fraction form
    638,127.52/880,621.91 = 351,657.88/x
  3. Step 3: Cross multiply
    638,127.52x = 880,621.91 × 351,657.88
  4. Step 4: Simplify right side
    638,127.52x = 309,677,632,193.86
  5. Step 5: Solve for x
    x = 309,677,632,193.86/638,127.52
  6. Step 6: Final answer
    x = 485,291.14

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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.