Home / 926,761.80-1,390,142.70-327,718.20

Finding the Fourth Proportional to 926,761.80, 1,390,142.70 and 327,718.20

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Solution

The fourth proportional to 926,761.80, 1,390,142.70 and 327,718.20 is: 491,577.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    926,761.80 : 1,390,142.70 = 327,718.20 : x
  2. Step 2: Convert to fraction form
    926,761.80/1,390,142.70 = 327,718.20/x
  3. Step 3: Cross multiply
    926,761.80x = 1,390,142.70 × 327,718.20
  4. Step 4: Simplify right side
    926,761.80x = 455,575,063,387.14
  5. Step 5: Solve for x
    x = 455,575,063,387.14/926,761.80
  6. Step 6: Final answer
    x = 491,577.30

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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.