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Finding the Fourth Proportional to 999,798, 1,379,721.36 and 547,089.12

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Solution

The fourth proportional to 999,798, 1,379,721.36 and 547,089.12 is: 754,983.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    999,798 : 1,379,721.36 = 547,089.12 : x
  2. Step 2: Convert to fraction form
    999,798/1,379,721.36 = 547,089.12/x
  3. Step 3: Cross multiply
    999,798x = 1,379,721.36 × 547,089.12
  4. Step 4: Simplify right side
    999,798x = 754,830,544,687.60
  5. Step 5: Solve for x
    x = 754,830,544,687.60/999,798
  6. Step 6: Final answer
    x = 754,983.05

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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.