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Finding the Fourth Proportional to 8,495,812.40, 12,722,723.40 and 5,640,465.20

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Solution

The fourth proportional to 8,495,812.40, 12,722,723.40 and 5,640,465.20 is: 8,446,758.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,495,812.40 : 12,722,723.40 = 5,640,465.20 : x
  2. Step 2: Convert to fraction form
    8,495,812.40/12,722,723.40 = 5,640,465.20/x
  3. Step 3: Cross multiply
    8,495,812.40x = 12,722,723.40 × 5,640,465.20
  4. Step 4: Simplify right side
    8,495,812.40x = 71,762,078,586,925.69
  5. Step 5: Solve for x
    x = 71,762,078,586,925.69/8,495,812.40
  6. Step 6: Final answer
    x = 8,446,758.85

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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.