Home / 1,942,950.80-2,912,287.80-680,128.40

Finding the Fourth Proportional to 1,942,950.80, 2,912,287.80 and 680,128.40

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Solution

The fourth proportional to 1,942,950.80, 2,912,287.80 and 680,128.40 is: 1,019,444.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,942,950.80 : 2,912,287.80 = 680,128.40 : x
  2. Step 2: Convert to fraction form
    1,942,950.80/2,912,287.80 = 680,128.40/x
  3. Step 3: Cross multiply
    1,942,950.80x = 2,912,287.80 × 680,128.40
  4. Step 4: Simplify right side
    1,942,950.80x = 1,980,729,641,753.52
  5. Step 5: Solve for x
    x = 1,980,729,641,753.52/1,942,950.80
  6. Step 6: Final answer
    x = 1,019,444.05

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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.