Home / 743,434.98-1,025,991.03-421,147.72

Finding the Fourth Proportional to 743,434.98, 1,025,991.03 and 421,147.72

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Solution

The fourth proportional to 743,434.98, 1,025,991.03 and 421,147.72 is: 581,212.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    743,434.98 : 1,025,991.03 = 421,147.72 : x
  2. Step 2: Convert to fraction form
    743,434.98/1,025,991.03 = 421,147.72/x
  3. Step 3: Cross multiply
    743,434.98x = 1,025,991.03 × 421,147.72
  4. Step 4: Simplify right side
    743,434.98x = 432,093,783,024.95
  5. Step 5: Solve for x
    x = 432,093,783,024.95/743,434.98
  6. Step 6: Final answer
    x = 581,212.61

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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.