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Finding the Fourth Proportional to 999,617.78, 1,379,506.95 and 546,908.78

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Solution

The fourth proportional to 999,617.78, 1,379,506.95 and 546,908.78 is: 754,752.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    999,617.78 : 1,379,506.95 = 546,908.78 : x
  2. Step 2: Convert to fraction form
    999,617.78/1,379,506.95 = 546,908.78/x
  3. Step 3: Cross multiply
    999,617.78x = 1,379,506.95 × 546,908.78
  4. Step 4: Simplify right side
    999,617.78x = 754,464,463,026.02
  5. Step 5: Solve for x
    x = 754,464,463,026.02/999,617.78
  6. Step 6: Final answer
    x = 754,752.94

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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.