Home / 814,240.20-1,221,360.30-802,430.40

Finding the Fourth Proportional to 814,240.20, 1,221,360.30 and 802,430.40

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Solution

The fourth proportional to 814,240.20, 1,221,360.30 and 802,430.40 is: 1,203,645.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    814,240.20 : 1,221,360.30 = 802,430.40 : x
  2. Step 2: Convert to fraction form
    814,240.20/1,221,360.30 = 802,430.40/x
  3. Step 3: Cross multiply
    814,240.20x = 1,221,360.30 × 802,430.40
  4. Step 4: Simplify right side
    814,240.20x = 980,056,634,073.12
  5. Step 5: Solve for x
    x = 980,056,634,073.12/814,240.20
  6. Step 6: Final answer
    x = 1,203,645.60

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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.