Home / 637,899.80-956,849.70-438,834.20

Finding the Fourth Proportional to 637,899.80, 956,849.70 and 438,834.20

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Solution

The fourth proportional to 637,899.80, 956,849.70 and 438,834.20 is: 658,251.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    637,899.80 : 956,849.70 = 438,834.20 : x
  2. Step 2: Convert to fraction form
    637,899.80/956,849.70 = 438,834.20/x
  3. Step 3: Cross multiply
    637,899.80x = 956,849.70 × 438,834.20
  4. Step 4: Simplify right side
    637,899.80x = 419,898,372,619.74
  5. Step 5: Solve for x
    x = 419,898,372,619.74/637,899.80
  6. Step 6: Final answer
    x = 658,251.30

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Double scale
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Similar ratio
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1.5x scale

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.