Home / 819,346.20-1,229,019.30-653,458.20

Finding the Fourth Proportional to 819,346.20, 1,229,019.30 and 653,458.20

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Solution

The fourth proportional to 819,346.20, 1,229,019.30 and 653,458.20 is: 980,187.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,346.20 : 1,229,019.30 = 653,458.20 : x
  2. Step 2: Convert to fraction form
    819,346.20/1,229,019.30 = 653,458.20/x
  3. Step 3: Cross multiply
    819,346.20x = 1,229,019.30 × 653,458.20
  4. Step 4: Simplify right side
    819,346.20x = 803,112,739,543.26
  5. Step 5: Solve for x
    x = 803,112,739,543.26/819,346.20
  6. Step 6: Final answer
    x = 980,187.30

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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.