Home / 1,247,687.80-1,871,531.70-449,870.20

Finding the Fourth Proportional to 1,247,687.80, 1,871,531.70 and 449,870.20

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Solution

The fourth proportional to 1,247,687.80, 1,871,531.70 and 449,870.20 is: 674,805.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,247,687.80 : 1,871,531.70 = 449,870.20 : x
  2. Step 2: Convert to fraction form
    1,247,687.80/1,871,531.70 = 449,870.20/x
  3. Step 3: Cross multiply
    1,247,687.80x = 1,871,531.70 × 449,870.20
  4. Step 4: Simplify right side
    1,247,687.80x = 841,946,340,185.34
  5. Step 5: Solve for x
    x = 841,946,340,185.34/1,247,687.80
  6. Step 6: Final answer
    x = 674,805.30

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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.