Home / 782,989.39-1,080,601.19-438,883.76

Finding the Fourth Proportional to 782,989.39, 1,080,601.19 and 438,883.76

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Solution

The fourth proportional to 782,989.39, 1,080,601.19 and 438,883.76 is: 605,702.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    782,989.39 : 1,080,601.19 = 438,883.76 : x
  2. Step 2: Convert to fraction form
    782,989.39/1,080,601.19 = 438,883.76/x
  3. Step 3: Cross multiply
    782,989.39x = 1,080,601.19 × 438,883.76
  4. Step 4: Simplify right side
    782,989.39x = 474,258,311,133.26
  5. Step 5: Solve for x
    x = 474,258,311,133.26/782,989.39
  6. Step 6: Final answer
    x = 605,702.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.