Home / 1,008,443.60-1,512,665.40-260,489.60

Finding the Fourth Proportional to 1,008,443.60, 1,512,665.40 and 260,489.60

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Solution

The fourth proportional to 1,008,443.60, 1,512,665.40 and 260,489.60 is: 390,734.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,008,443.60 : 1,512,665.40 = 260,489.60 : x
  2. Step 2: Convert to fraction form
    1,008,443.60/1,512,665.40 = 260,489.60/x
  3. Step 3: Cross multiply
    1,008,443.60x = 1,512,665.40 × 260,489.60
  4. Step 4: Simplify right side
    1,008,443.60x = 394,033,604,979.84
  5. Step 5: Solve for x
    x = 394,033,604,979.84/1,008,443.60
  6. Step 6: Final answer
    x = 390,734.40

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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.