Home / 1,989,158.51-2,745,522.19-1,215,440.87

Finding the Fourth Proportional to 1,989,158.51, 2,745,522.19 and 1,215,440.87

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Solution

The fourth proportional to 1,989,158.51, 2,745,522.19 and 1,215,440.87 is: 1,677,603.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,989,158.51 : 2,745,522.19 = 1,215,440.87 : x
  2. Step 2: Convert to fraction form
    1,989,158.51/2,745,522.19 = 1,215,440.87/x
  3. Step 3: Cross multiply
    1,989,158.51x = 2,745,522.19 × 1,215,440.87
  4. Step 4: Simplify right side
    1,989,158.51x = 3,337,019,885,268.74
  5. Step 5: Solve for x
    x = 3,337,019,885,268.74/1,989,158.51
  6. Step 6: Final answer
    x = 1,677,603.81

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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.