Home / 1,218,912.55-1,681,541.02-789,331.07

Finding the Fourth Proportional to 1,218,912.55, 1,681,541.02 and 789,331.07

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Solution

The fourth proportional to 1,218,912.55, 1,681,541.02 and 789,331.07 is: 1,088,915.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,218,912.55 : 1,681,541.02 = 789,331.07 : x
  2. Step 2: Convert to fraction form
    1,218,912.55/1,681,541.02 = 789,331.07/x
  3. Step 3: Cross multiply
    1,218,912.55x = 1,681,541.02 × 789,331.07
  4. Step 4: Simplify right side
    1,218,912.55x = 1,327,292,572,565.49
  5. Step 5: Solve for x
    x = 1,327,292,572,565.49/1,218,912.55
  6. Step 6: Final answer
    x = 1,088,915.34

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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.