Home / 1,389,425.40-2,084,138.10-1,374,679.80

Finding the Fourth Proportional to 1,389,425.40, 2,084,138.10 and 1,374,679.80

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Solution

The fourth proportional to 1,389,425.40, 2,084,138.10 and 1,374,679.80 is: 2,062,019.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,389,425.40 : 2,084,138.10 = 1,374,679.80 : x
  2. Step 2: Convert to fraction form
    1,389,425.40/2,084,138.10 = 1,374,679.80/x
  3. Step 3: Cross multiply
    1,389,425.40x = 2,084,138.10 × 1,374,679.80
  4. Step 4: Simplify right side
    1,389,425.40x = 2,865,022,546,480.38
  5. Step 5: Solve for x
    x = 2,865,022,546,480.38/1,389,425.40
  6. Step 6: Final answer
    x = 2,062,019.70

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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.