Home / 1,438,989.07-2,158,923.45-863,250.40

Finding the Fourth Proportional to 1,438,989.07, 2,158,923.45 and 863,250.40

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Solution

The fourth proportional to 1,438,989.07, 2,158,923.45 and 863,250.40 is: 1,295,139.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,438,989.07 : 2,158,923.45 = 863,250.40 : x
  2. Step 2: Convert to fraction form
    1,438,989.07/2,158,923.45 = 863,250.40/x
  3. Step 3: Cross multiply
    1,438,989.07x = 2,158,923.45 × 863,250.40
  4. Step 4: Simplify right side
    1,438,989.07x = 1,863,691,531,781.88
  5. Step 5: Solve for x
    x = 1,863,691,531,781.88/1,438,989.07
  6. Step 6: Final answer
    x = 1,295,139.46

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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.