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Finding the Fourth Proportional to 887,188.80, 1,330,783.20 and 326,150.40

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Solution

The fourth proportional to 887,188.80, 1,330,783.20 and 326,150.40 is: 489,225.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    887,188.80 : 1,330,783.20 = 326,150.40 : x
  2. Step 2: Convert to fraction form
    887,188.80/1,330,783.20 = 326,150.40/x
  3. Step 3: Cross multiply
    887,188.80x = 1,330,783.20 × 326,150.40
  4. Step 4: Simplify right side
    887,188.80x = 434,035,472,993.28
  5. Step 5: Solve for x
    x = 434,035,472,993.28/887,188.80
  6. Step 6: Final answer
    x = 489,225.60

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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.