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Finding the Fourth Proportional to 2,912,648.60, 4,368,972.90 and 1,960,866.20

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Solution

The fourth proportional to 2,912,648.60, 4,368,972.90 and 1,960,866.20 is: 2,941,299.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,912,648.60 : 4,368,972.90 = 1,960,866.20 : x
  2. Step 2: Convert to fraction form
    2,912,648.60/4,368,972.90 = 1,960,866.20/x
  3. Step 3: Cross multiply
    2,912,648.60x = 4,368,972.90 × 1,960,866.20
  4. Step 4: Simplify right side
    2,912,648.60x = 8,566,971,288,325.98
  5. Step 5: Solve for x
    x = 8,566,971,288,325.98/2,912,648.60
  6. Step 6: Final answer
    x = 2,941,299.30

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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.