Home / 1,151,983.62-1,589,738.40-642,686.13

Finding the Fourth Proportional to 1,151,983.62, 1,589,738.40 and 642,686.13

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Solution

The fourth proportional to 1,151,983.62, 1,589,738.40 and 642,686.13 is: 886,907.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,151,983.62 : 1,589,738.40 = 642,686.13 : x
  2. Step 2: Convert to fraction form
    1,151,983.62/1,589,738.40 = 642,686.13/x
  3. Step 3: Cross multiply
    1,151,983.62x = 1,589,738.40 × 642,686.13
  4. Step 4: Simplify right side
    1,151,983.62x = 1,021,702,820,008.39
  5. Step 5: Solve for x
    x = 1,021,702,820,008.39/1,151,983.62
  6. Step 6: Final answer
    x = 886,907.42

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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.