Home / 1,989,618.80-2,984,428.20-1,871,520.80

Finding the Fourth Proportional to 1,989,618.80, 2,984,428.20 and 1,871,520.80

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Solution

The fourth proportional to 1,989,618.80, 2,984,428.20 and 1,871,520.80 is: 2,807,281.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,989,618.80 : 2,984,428.20 = 1,871,520.80 : x
  2. Step 2: Convert to fraction form
    1,989,618.80/2,984,428.20 = 1,871,520.80/x
  3. Step 3: Cross multiply
    1,989,618.80x = 2,984,428.20 × 1,871,520.80
  4. Step 4: Simplify right side
    1,989,618.80x = 5,585,419,452,406.56
  5. Step 5: Solve for x
    x = 5,585,419,452,406.56/1,989,618.80
  6. Step 6: Final answer
    x = 2,807,281.20

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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.