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Finding the Fourth Proportional to 999,955.22, 1,500,223.32 and 360,246.78

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Solution

The fourth proportional to 999,955.22, 1,500,223.32 and 360,246.78 is: 540,474.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    999,955.22 : 1,500,223.32 = 360,246.78 : x
  2. Step 2: Convert to fraction form
    999,955.22/1,500,223.32 = 360,246.78/x
  3. Step 3: Cross multiply
    999,955.22x = 1,500,223.32 × 360,246.78
  4. Step 4: Simplify right side
    999,955.22x = 540,450,620,310.91
  5. Step 5: Solve for x
    x = 540,450,620,310.91/999,955.22
  6. Step 6: Final answer
    x = 540,474.82

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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.