Home / 678,609.85-936,845.16-523,221.76

Finding the Fourth Proportional to 678,609.85, 936,845.16 and 523,221.76

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Solution

The fourth proportional to 678,609.85, 936,845.16 and 523,221.76 is: 722,326.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,609.85 : 936,845.16 = 523,221.76 : x
  2. Step 2: Convert to fraction form
    678,609.85/936,845.16 = 523,221.76/x
  3. Step 3: Cross multiply
    678,609.85x = 936,845.16 × 523,221.76
  4. Step 4: Simplify right side
    678,609.85x = 490,177,773,462.68
  5. Step 5: Solve for x
    x = 490,177,773,462.68/678,609.85
  6. Step 6: Final answer
    x = 722,326.35

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Double scale
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1.5x scale

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.