Home / 887,130.80-1,330,696.20-326,092.40

Finding the Fourth Proportional to 887,130.80, 1,330,696.20 and 326,092.40

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Solution

The fourth proportional to 887,130.80, 1,330,696.20 and 326,092.40 is: 489,138.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    887,130.80 : 1,330,696.20 = 326,092.40 : x
  2. Step 2: Convert to fraction form
    887,130.80/1,330,696.20 = 326,092.40/x
  3. Step 3: Cross multiply
    887,130.80x = 1,330,696.20 × 326,092.40
  4. Step 4: Simplify right side
    887,130.80x = 433,929,917,528.88
  5. Step 5: Solve for x
    x = 433,929,917,528.88/887,130.80
  6. Step 6: Final answer
    x = 489,138.60

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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.