Home / 1,178,908.56-1,626,893.84-642,364.56

Finding the Fourth Proportional to 1,178,908.56, 1,626,893.84 and 642,364.56

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Solution

The fourth proportional to 1,178,908.56, 1,626,893.84 and 642,364.56 is: 886,463.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,178,908.56 : 1,626,893.84 = 642,364.56 : x
  2. Step 2: Convert to fraction form
    1,178,908.56/1,626,893.84 = 642,364.56/x
  3. Step 3: Cross multiply
    1,178,908.56x = 1,626,893.84 × 642,364.56
  4. Step 4: Simplify right side
    1,178,908.56x = 1,045,058,947,304.22
  5. Step 5: Solve for x
    x = 1,045,058,947,304.22/1,178,908.56
  6. Step 6: Final answer
    x = 886,463.11

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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.