Home / 887,185.40-1,330,778.10-326,438.60

Finding the Fourth Proportional to 887,185.40, 1,330,778.10 and 326,438.60

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Solution

The fourth proportional to 887,185.40, 1,330,778.10 and 326,438.60 is: 489,657.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    887,185.40 : 1,330,778.10 = 326,438.60 : x
  2. Step 2: Convert to fraction form
    887,185.40/1,330,778.10 = 326,438.60/x
  3. Step 3: Cross multiply
    887,185.40x = 1,330,778.10 × 326,438.60
  4. Step 4: Simplify right side
    887,185.40x = 434,417,339,874.66
  5. Step 5: Solve for x
    x = 434,417,339,874.66/887,185.40
  6. Step 6: Final answer
    x = 489,657.90

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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.