Home / 1,349,108.80-1,861,960.06-858,921.77

Finding the Fourth Proportional to 1,349,108.80, 1,861,960.06 and 858,921.77

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Solution

The fourth proportional to 1,349,108.80, 1,861,960.06 and 858,921.77 is: 1,185,432.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,349,108.80 : 1,861,960.06 = 858,921.77 : x
  2. Step 2: Convert to fraction form
    1,349,108.80/1,861,960.06 = 858,921.77/x
  3. Step 3: Cross multiply
    1,349,108.80x = 1,861,960.06 × 858,921.77
  4. Step 4: Simplify right side
    1,349,108.80x = 1,599,278,036,133.06
  5. Step 5: Solve for x
    x = 1,599,278,036,133.06/1,349,108.80
  6. Step 6: Final answer
    x = 1,185,432.96

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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.