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Finding the Fourth Proportional to 7,894,960.80, 10,895,078.40 and 4,273,288.80

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Solution

The fourth proportional to 7,894,960.80, 10,895,078.40 and 4,273,288.80 is: 5,897,156.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,894,960.80 : 10,895,078.40 = 4,273,288.80 : x
  2. Step 2: Convert to fraction form
    7,894,960.80/10,895,078.40 = 4,273,288.80/x
  3. Step 3: Cross multiply
    7,894,960.80x = 10,895,078.40 × 4,273,288.80
  4. Step 4: Simplify right side
    7,894,960.80x = 46,557,816,501,841.92
  5. Step 5: Solve for x
    x = 46,557,816,501,841.92/7,894,960.80
  6. Step 6: Final answer
    x = 5,897,156.13

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.