Home / 1,120,839.80-1,681,259.70-987,870.20

Finding the Fourth Proportional to 1,120,839.80, 1,681,259.70 and 987,870.20

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Solution

The fourth proportional to 1,120,839.80, 1,681,259.70 and 987,870.20 is: 1,481,805.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,120,839.80 : 1,681,259.70 = 987,870.20 : x
  2. Step 2: Convert to fraction form
    1,120,839.80/1,681,259.70 = 987,870.20/x
  3. Step 3: Cross multiply
    1,120,839.80x = 1,681,259.70 × 987,870.20
  4. Step 4: Simplify right side
    1,120,839.80x = 1,660,866,356,090.94
  5. Step 5: Solve for x
    x = 1,660,866,356,090.94/1,120,839.80
  6. Step 6: Final answer
    x = 1,481,805.30

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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.