Home / 425,524.16-638,288.34-126,010.40

Finding the Fourth Proportional to 425,524.16, 638,288.34 and 126,010.40

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Solution

The fourth proportional to 425,524.16, 638,288.34 and 126,010.40 is: 189,016.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,524.16 : 638,288.34 = 126,010.40 : x
  2. Step 2: Convert to fraction form
    425,524.16/638,288.34 = 126,010.40/x
  3. Step 3: Cross multiply
    425,524.16x = 638,288.34 × 126,010.40
  4. Step 4: Simplify right side
    425,524.16x = 80,430,969,038.74
  5. Step 5: Solve for x
    x = 80,430,969,038.74/425,524.16
  6. Step 6: Final answer
    x = 189,016.22

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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.