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Finding the Fourth Proportional to 999,760, 1,379,668.80 and 547,051

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Solution

The fourth proportional to 999,760, 1,379,668.80 and 547,051 is: 754,930.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    999,760 : 1,379,668.80 = 547,051 : x
  2. Step 2: Convert to fraction form
    999,760/1,379,668.80 = 547,051/x
  3. Step 3: Cross multiply
    999,760x = 1,379,668.80 × 547,051
  4. Step 4: Simplify right side
    999,760x = 754,749,196,708.80
  5. Step 5: Solve for x
    x = 754,749,196,708.80/999,760
  6. Step 6: Final answer
    x = 754,930.38

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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.