Home / 910,499.40-1,365,749.10-279,331.20

Finding the Fourth Proportional to 910,499.40, 1,365,749.10 and 279,331.20

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Solution

The fourth proportional to 910,499.40, 1,365,749.10 and 279,331.20 is: 418,996.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    910,499.40 : 1,365,749.10 = 279,331.20 : x
  2. Step 2: Convert to fraction form
    910,499.40/1,365,749.10 = 279,331.20/x
  3. Step 3: Cross multiply
    910,499.40x = 1,365,749.10 × 279,331.20
  4. Step 4: Simplify right side
    910,499.40x = 381,496,335,001.92
  5. Step 5: Solve for x
    x = 381,496,335,001.92/910,499.40
  6. Step 6: Final answer
    x = 418,996.80

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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.