Home / 1,218,938-1,681,576.20-789,356.48

Finding the Fourth Proportional to 1,218,938, 1,681,576.20 and 789,356.48

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Solution

The fourth proportional to 1,218,938, 1,681,576.20 and 789,356.48 is: 1,088,950.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,218,938 : 1,681,576.20 = 789,356.48 : x
  2. Step 2: Convert to fraction form
    1,218,938/1,681,576.20 = 789,356.48/x
  3. Step 3: Cross multiply
    1,218,938x = 1,681,576.20 × 789,356.48
  4. Step 4: Simplify right side
    1,218,938x = 1,327,363,070,083.78
  5. Step 5: Solve for x
    x = 1,327,363,070,083.78/1,218,938
  6. Step 6: Final answer
    x = 1,088,950.44

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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.