Home / 1,438,750.80-2,158,126.20-1,377,320.40

Finding the Fourth Proportional to 1,438,750.80, 2,158,126.20 and 1,377,320.40

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Solution

The fourth proportional to 1,438,750.80, 2,158,126.20 and 1,377,320.40 is: 2,065,980.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,438,750.80 : 2,158,126.20 = 1,377,320.40 : x
  2. Step 2: Convert to fraction form
    1,438,750.80/2,158,126.20 = 1,377,320.40/x
  3. Step 3: Cross multiply
    1,438,750.80x = 2,158,126.20 × 1,377,320.40
  4. Step 4: Simplify right side
    1,438,750.80x = 2,972,431,241,034.48
  5. Step 5: Solve for x
    x = 2,972,431,241,034.48/1,438,750.80
  6. Step 6: Final answer
    x = 2,065,980.60

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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.