Home / 910,867.60-1,366,301.40-279,699.40

Finding the Fourth Proportional to 910,867.60, 1,366,301.40 and 279,699.40

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Solution

The fourth proportional to 910,867.60, 1,366,301.40 and 279,699.40 is: 419,549.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    910,867.60 : 1,366,301.40 = 279,699.40 : x
  2. Step 2: Convert to fraction form
    910,867.60/1,366,301.40 = 279,699.40/x
  3. Step 3: Cross multiply
    910,867.60x = 1,366,301.40 × 279,699.40
  4. Step 4: Simplify right side
    910,867.60x = 382,153,681,799.16
  5. Step 5: Solve for x
    x = 382,153,681,799.16/910,867.60
  6. Step 6: Final answer
    x = 419,549.10

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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.