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Finding the Fourth Proportional to 1,942,691.12, 2,913,406.06 and 645,495.12

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Solution

The fourth proportional to 1,942,691.12, 2,913,406.06 and 645,495.12 is: 968,033.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,942,691.12 : 2,913,406.06 = 645,495.12 : x
  2. Step 2: Convert to fraction form
    1,942,691.12/2,913,406.06 = 645,495.12/x
  3. Step 3: Cross multiply
    1,942,691.12x = 2,913,406.06 × 645,495.12
  4. Step 4: Simplify right side
    1,942,691.12x = 1,880,589,394,308.43
  5. Step 5: Solve for x
    x = 1,880,589,394,308.43/1,942,691.12
  6. Step 6: Final answer
    x = 968,033.14

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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.