Home / 826,612.40-1,239,918.60-354,220.40

Finding the Fourth Proportional to 826,612.40, 1,239,918.60 and 354,220.40

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Solution

The fourth proportional to 826,612.40, 1,239,918.60 and 354,220.40 is: 531,330.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    826,612.40 : 1,239,918.60 = 354,220.40 : x
  2. Step 2: Convert to fraction form
    826,612.40/1,239,918.60 = 354,220.40/x
  3. Step 3: Cross multiply
    826,612.40x = 1,239,918.60 × 354,220.40
  4. Step 4: Simplify right side
    826,612.40x = 439,204,462,459.44
  5. Step 5: Solve for x
    x = 439,204,462,459.44/826,612.40
  6. Step 6: Final answer
    x = 531,330.60

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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.