Home / 1,989,160.51-2,745,524.95-1,215,442.87

Finding the Fourth Proportional to 1,989,160.51, 2,745,524.95 and 1,215,442.87

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Solution

The fourth proportional to 1,989,160.51, 2,745,524.95 and 1,215,442.87 is: 1,677,606.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,989,160.51 : 2,745,524.95 = 1,215,442.87 : x
  2. Step 2: Convert to fraction form
    1,989,160.51/2,745,524.95 = 1,215,442.87/x
  3. Step 3: Cross multiply
    1,989,160.51x = 2,745,524.95 × 1,215,442.87
  4. Step 4: Simplify right side
    1,989,160.51x = 3,337,028,724,884.61
  5. Step 5: Solve for x
    x = 3,337,028,724,884.61/1,989,160.51
  6. Step 6: Final answer
    x = 1,677,606.56

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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.