Home / 865,111.20-1,297,666.80-491,863.20

Finding the Fourth Proportional to 865,111.20, 1,297,666.80 and 491,863.20

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Solution

The fourth proportional to 865,111.20, 1,297,666.80 and 491,863.20 is: 737,794.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    865,111.20 : 1,297,666.80 = 491,863.20 : x
  2. Step 2: Convert to fraction form
    865,111.20/1,297,666.80 = 491,863.20/x
  3. Step 3: Cross multiply
    865,111.20x = 1,297,666.80 × 491,863.20
  4. Step 4: Simplify right side
    865,111.20x = 638,274,544,781.76
  5. Step 5: Solve for x
    x = 638,274,544,781.76/865,111.20
  6. Step 6: Final answer
    x = 737,794.80

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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.