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Finding the Fourth Proportional to 2,647,642.60, 3,972,500.70 and 964,916.20

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Solution

The fourth proportional to 2,647,642.60, 3,972,500.70 and 964,916.20 is: 1,447,752.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,647,642.60 : 3,972,500.70 = 964,916.20 : x
  2. Step 2: Convert to fraction form
    2,647,642.60/3,972,500.70 = 964,916.20/x
  3. Step 3: Cross multiply
    2,647,642.60x = 3,972,500.70 × 964,916.20
  4. Step 4: Simplify right side
    2,647,642.60x = 3,833,130,279,941.34
  5. Step 5: Solve for x
    x = 3,833,130,279,941.34/2,647,642.60
  6. Step 6: Final answer
    x = 1,447,752.16

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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.