Home / 928,687.80-1,393,031.70-298,054.20

Finding the Fourth Proportional to 928,687.80, 1,393,031.70 and 298,054.20

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Solution

The fourth proportional to 928,687.80, 1,393,031.70 and 298,054.20 is: 447,081.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    928,687.80 : 1,393,031.70 = 298,054.20 : x
  2. Step 2: Convert to fraction form
    928,687.80/1,393,031.70 = 298,054.20/x
  3. Step 3: Cross multiply
    928,687.80x = 1,393,031.70 × 298,054.20
  4. Step 4: Simplify right side
    928,687.80x = 415,198,948,918.14
  5. Step 5: Solve for x
    x = 415,198,948,918.14/928,687.80
  6. Step 6: Final answer
    x = 447,081.30

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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.