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Finding the Fourth Proportional to 8,398,664.40, 12,588,665.40 and 4,614,862.80

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Solution

The fourth proportional to 8,398,664.40, 12,588,665.40 and 4,614,862.80 is: 6,917,166.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,398,664.40 : 12,588,665.40 = 4,614,862.80 : x
  2. Step 2: Convert to fraction form
    8,398,664.40/12,588,665.40 = 4,614,862.80/x
  3. Step 3: Cross multiply
    8,398,664.40x = 12,588,665.40 × 4,614,862.80
  4. Step 4: Simplify right side
    8,398,664.40x = 58,094,963,656,107.12
  5. Step 5: Solve for x
    x = 58,094,963,656,107.12/8,398,664.40
  6. Step 6: Final answer
    x = 6,917,166.93

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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.