Home / 819,386.20-1,229,079.30-653,498.20

Finding the Fourth Proportional to 819,386.20, 1,229,079.30 and 653,498.20

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Solution

The fourth proportional to 819,386.20, 1,229,079.30 and 653,498.20 is: 980,247.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,386.20 : 1,229,079.30 = 653,498.20 : x
  2. Step 2: Convert to fraction form
    819,386.20/1,229,079.30 = 653,498.20/x
  3. Step 3: Cross multiply
    819,386.20x = 1,229,079.30 × 653,498.20
  4. Step 4: Simplify right side
    819,386.20x = 803,201,110,207.26
  5. Step 5: Solve for x
    x = 803,201,110,207.26/819,386.20
  6. Step 6: Final answer
    x = 980,247.30

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Half scale
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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.