Home / 821,098.80-1,231,648.20-738,430.20

Finding the Fourth Proportional to 821,098.80, 1,231,648.20 and 738,430.20

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Solution

The fourth proportional to 821,098.80, 1,231,648.20 and 738,430.20 is: 1,107,645.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,098.80 : 1,231,648.20 = 738,430.20 : x
  2. Step 2: Convert to fraction form
    821,098.80/1,231,648.20 = 738,430.20/x
  3. Step 3: Cross multiply
    821,098.80x = 1,231,648.20 × 738,430.20
  4. Step 4: Simplify right side
    821,098.80x = 909,486,226,655.64
  5. Step 5: Solve for x
    x = 909,486,226,655.64/821,098.80
  6. Step 6: Final answer
    x = 1,107,645.30

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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.