Home / 425,823.66-638,626.50-126,234.18

Finding the Fourth Proportional to 425,823.66, 638,626.50 and 126,234.18

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Solution

The fourth proportional to 425,823.66, 638,626.50 and 126,234.18 is: 189,318.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,823.66 : 638,626.50 = 126,234.18 : x
  2. Step 2: Convert to fraction form
    425,823.66/638,626.50 = 126,234.18/x
  3. Step 3: Cross multiply
    425,823.66x = 638,626.50 × 126,234.18
  4. Step 4: Simplify right side
    425,823.66x = 80,616,492,553.77
  5. Step 5: Solve for x
    x = 80,616,492,553.77/425,823.66
  6. Step 6: Final answer
    x = 189,318.96

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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.