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Finding the Fourth Proportional to 999,963.72, 1,499,955.30 and 252,009.72

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Solution

The fourth proportional to 999,963.72, 1,499,955.30 and 252,009.72 is: 378,017.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    999,963.72 : 1,499,955.30 = 252,009.72 : x
  2. Step 2: Convert to fraction form
    999,963.72/1,499,955.30 = 252,009.72/x
  3. Step 3: Cross multiply
    999,963.72x = 1,499,955.30 × 252,009.72
  4. Step 4: Simplify right side
    999,963.72x = 378,003,315,165.52
  5. Step 5: Solve for x
    x = 378,003,315,165.52/999,963.72
  6. Step 6: Final answer
    x = 378,017.03

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.