Home / 885,772.20-1,328,658.30-511,357.80

Finding the Fourth Proportional to 885,772.20, 1,328,658.30 and 511,357.80

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Solution

The fourth proportional to 885,772.20, 1,328,658.30 and 511,357.80 is: 767,036.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    885,772.20 : 1,328,658.30 = 511,357.80 : x
  2. Step 2: Convert to fraction form
    885,772.20/1,328,658.30 = 511,357.80/x
  3. Step 3: Cross multiply
    885,772.20x = 1,328,658.30 × 511,357.80
  4. Step 4: Simplify right side
    885,772.20x = 679,419,785,239.74
  5. Step 5: Solve for x
    x = 679,419,785,239.74/885,772.20
  6. Step 6: Final answer
    x = 767,036.70

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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.