Home / 917,408.20-1,376,112.30-873,121.45

Finding the Fourth Proportional to 917,408.20, 1,376,112.30 and 873,121.45

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Solution

The fourth proportional to 917,408.20, 1,376,112.30 and 873,121.45 is: 1,309,682.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,408.20 : 1,376,112.30 = 873,121.45 : x
  2. Step 2: Convert to fraction form
    917,408.20/1,376,112.30 = 873,121.45/x
  3. Step 3: Cross multiply
    917,408.20x = 1,376,112.30 × 873,121.45
  4. Step 4: Simplify right side
    917,408.20x = 1,201,513,166,738.84
  5. Step 5: Solve for x
    x = 1,201,513,166,738.84/917,408.20
  6. Step 6: Final answer
    x = 1,309,682.18

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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.