Home / 887,138.90-1,330,708.35-326,057.30

Finding the Fourth Proportional to 887,138.90, 1,330,708.35 and 326,057.30

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Solution

The fourth proportional to 887,138.90, 1,330,708.35 and 326,057.30 is: 489,085.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    887,138.90 : 1,330,708.35 = 326,057.30 : x
  2. Step 2: Convert to fraction form
    887,138.90/1,330,708.35 = 326,057.30/x
  3. Step 3: Cross multiply
    887,138.90x = 1,330,708.35 × 326,057.30
  4. Step 4: Simplify right side
    887,138.90x = 433,887,171,688.46
  5. Step 5: Solve for x
    x = 433,887,171,688.46/887,138.90
  6. Step 6: Final answer
    x = 489,085.95

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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.