Home / 810,129.60-1,215,194.40-652,665.60

Finding the Fourth Proportional to 810,129.60, 1,215,194.40 and 652,665.60

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Solution

The fourth proportional to 810,129.60, 1,215,194.40 and 652,665.60 is: 978,998.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,129.60 : 1,215,194.40 = 652,665.60 : x
  2. Step 2: Convert to fraction form
    810,129.60/1,215,194.40 = 652,665.60/x
  3. Step 3: Cross multiply
    810,129.60x = 1,215,194.40 × 652,665.60
  4. Step 4: Simplify right side
    810,129.60x = 793,115,582,192.64
  5. Step 5: Solve for x
    x = 793,115,582,192.64/810,129.60
  6. Step 6: Final answer
    x = 978,998.40

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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.