Home / 783,084.40-1,080,399.44-438,870

Finding the Fourth Proportional to 783,084.40, 1,080,399.44 and 438,870

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Solution

The fourth proportional to 783,084.40, 1,080,399.44 and 438,870 is: 605,496.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    783,084.40 : 1,080,399.44 = 438,870 : x
  2. Step 2: Convert to fraction form
    783,084.40/1,080,399.44 = 438,870/x
  3. Step 3: Cross multiply
    783,084.40x = 1,080,399.44 × 438,870
  4. Step 4: Simplify right side
    783,084.40x = 474,154,902,232.80
  5. Step 5: Solve for x
    x = 474,154,902,232.80/783,084.40
  6. Step 6: Final answer
    x = 605,496.55

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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.