Home / 887,126.30-1,330,689.45-326,087.90

Finding the Fourth Proportional to 887,126.30, 1,330,689.45 and 326,087.90

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Solution

The fourth proportional to 887,126.30, 1,330,689.45 and 326,087.90 is: 489,131.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    887,126.30 : 1,330,689.45 = 326,087.90 : x
  2. Step 2: Convert to fraction form
    887,126.30/1,330,689.45 = 326,087.90/x
  3. Step 3: Cross multiply
    887,126.30x = 1,330,689.45 × 326,087.90
  4. Step 4: Simplify right side
    887,126.30x = 433,921,728,302.66
  5. Step 5: Solve for x
    x = 433,921,728,302.66/887,126.30
  6. Step 6: Final answer
    x = 489,131.85

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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.