Home / 910,821.20-1,366,231.80-319,845.20

Finding the Fourth Proportional to 910,821.20, 1,366,231.80 and 319,845.20

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Solution

The fourth proportional to 910,821.20, 1,366,231.80 and 319,845.20 is: 479,767.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    910,821.20 : 1,366,231.80 = 319,845.20 : x
  2. Step 2: Convert to fraction form
    910,821.20/1,366,231.80 = 319,845.20/x
  3. Step 3: Cross multiply
    910,821.20x = 1,366,231.80 × 319,845.20
  4. Step 4: Simplify right side
    910,821.20x = 436,982,683,317.36
  5. Step 5: Solve for x
    x = 436,982,683,317.36/910,821.20
  6. Step 6: Final answer
    x = 479,767.80

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Half scale
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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.