Home / 1,218,881.90-1,682,061.72-675,005.78

Finding the Fourth Proportional to 1,218,881.90, 1,682,061.72 and 675,005.78

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Solution

The fourth proportional to 1,218,881.90, 1,682,061.72 and 675,005.78 is: 931,510.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,218,881.90 : 1,682,061.72 = 675,005.78 : x
  2. Step 2: Convert to fraction form
    1,218,881.90/1,682,061.72 = 675,005.78/x
  3. Step 3: Cross multiply
    1,218,881.90x = 1,682,061.72 × 675,005.78
  4. Step 4: Simplify right side
    1,218,881.90x = 1,135,401,383,316.74
  5. Step 5: Solve for x
    x = 1,135,401,383,316.74/1,218,881.90
  6. Step 6: Final answer
    x = 931,510.58

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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.