Home / 1,278,114.40-1,917,171.60-646,946.20

Finding the Fourth Proportional to 1,278,114.40, 1,917,171.60 and 646,946.20

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Solution

The fourth proportional to 1,278,114.40, 1,917,171.60 and 646,946.20 is: 970,419.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278,114.40 : 1,917,171.60 = 646,946.20 : x
  2. Step 2: Convert to fraction form
    1,278,114.40/1,917,171.60 = 646,946.20/x
  3. Step 3: Cross multiply
    1,278,114.40x = 1,917,171.60 × 646,946.20
  4. Step 4: Simplify right side
    1,278,114.40x = 1,240,306,881,367.92
  5. Step 5: Solve for x
    x = 1,240,306,881,367.92/1,278,114.40
  6. Step 6: Final answer
    x = 970,419.30

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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.