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Finding the Fourth Proportional to 999,837.12, 1,379,775.12 and 547,128

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Solution

The fourth proportional to 999,837.12, 1,379,775.12 and 547,128 is: 755,036.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    999,837.12 : 1,379,775.12 = 547,128 : x
  2. Step 2: Convert to fraction form
    999,837.12/1,379,775.12 = 547,128/x
  3. Step 3: Cross multiply
    999,837.12x = 1,379,775.12 × 547,128
  4. Step 4: Simplify right side
    999,837.12x = 754,913,601,855.36
  5. Step 5: Solve for x
    x = 754,913,601,855.36/999,837.12
  6. Step 6: Final answer
    x = 755,036.58

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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.