Home / 828,279.60-1,242,419.40-355,012.80

Finding the Fourth Proportional to 828,279.60, 1,242,419.40 and 355,012.80

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Solution

The fourth proportional to 828,279.60, 1,242,419.40 and 355,012.80 is: 532,519.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    828,279.60 : 1,242,419.40 = 355,012.80 : x
  2. Step 2: Convert to fraction form
    828,279.60/1,242,419.40 = 355,012.80/x
  3. Step 3: Cross multiply
    828,279.60x = 1,242,419.40 × 355,012.80
  4. Step 4: Simplify right side
    828,279.60x = 441,074,789,968.32
  5. Step 5: Solve for x
    x = 441,074,789,968.32/828,279.60
  6. Step 6: Final answer
    x = 532,519.20

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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.