Home / 910,979.40-1,366,469.10-279,892.20

Finding the Fourth Proportional to 910,979.40, 1,366,469.10 and 279,892.20

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Solution

The fourth proportional to 910,979.40, 1,366,469.10 and 279,892.20 is: 419,838.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    910,979.40 : 1,366,469.10 = 279,892.20 : x
  2. Step 2: Convert to fraction form
    910,979.40/1,366,469.10 = 279,892.20/x
  3. Step 3: Cross multiply
    910,979.40x = 1,366,469.10 × 279,892.20
  4. Step 4: Simplify right side
    910,979.40x = 382,464,042,631.02
  5. Step 5: Solve for x
    x = 382,464,042,631.02/910,979.40
  6. Step 6: Final answer
    x = 419,838.30

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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.