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Finding the Fourth Proportional to 1,877,571.72, 2,813,461.02 and 1,267,972.20

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Solution

The fourth proportional to 1,877,571.72, 2,813,461.02 and 1,267,972.20 is: 1,900,002.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,877,571.72 : 2,813,461.02 = 1,267,972.20 : x
  2. Step 2: Convert to fraction form
    1,877,571.72/2,813,461.02 = 1,267,972.20/x
  3. Step 3: Cross multiply
    1,877,571.72x = 2,813,461.02 × 1,267,972.20
  4. Step 4: Simplify right side
    1,877,571.72x = 3,567,390,359,143.64
  5. Step 5: Solve for x
    x = 3,567,390,359,143.64/1,877,571.72
  6. Step 6: Final answer
    x = 1,900,002.18

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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.