Home / 661,148.20-992,759.10-381,212.20

Finding the Fourth Proportional to 661,148.20, 992,759.10 and 381,212.20

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Solution

The fourth proportional to 661,148.20, 992,759.10 and 381,212.20 is: 572,416.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,148.20 : 992,759.10 = 381,212.20 : x
  2. Step 2: Convert to fraction form
    661,148.20/992,759.10 = 381,212.20/x
  3. Step 3: Cross multiply
    661,148.20x = 992,759.10 × 381,212.20
  4. Step 4: Simplify right side
    661,148.20x = 378,451,880,581.02
  5. Step 5: Solve for x
    x = 378,451,880,581.02/661,148.20
  6. Step 6: Final answer
    x = 572,416.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.