Home / 887,122.80-1,330,684.20-326,084.40

Finding the Fourth Proportional to 887,122.80, 1,330,684.20 and 326,084.40

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Solution

The fourth proportional to 887,122.80, 1,330,684.20 and 326,084.40 is: 489,126.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    887,122.80 : 1,330,684.20 = 326,084.40 : x
  2. Step 2: Convert to fraction form
    887,122.80/1,330,684.20 = 326,084.40/x
  3. Step 3: Cross multiply
    887,122.80x = 1,330,684.20 × 326,084.40
  4. Step 4: Simplify right side
    887,122.80x = 433,915,358,946.48
  5. Step 5: Solve for x
    x = 433,915,358,946.48/887,122.80
  6. Step 6: Final answer
    x = 489,126.60

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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.