Home / 731,449.94-1,007,157.93-640,295.78

Finding the Fourth Proportional to 731,449.94, 1,007,157.93 and 640,295.78

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Solution

The fourth proportional to 731,449.94, 1,007,157.93 and 640,295.78 is: 881,644.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    731,449.94 : 1,007,157.93 = 640,295.78 : x
  2. Step 2: Convert to fraction form
    731,449.94/1,007,157.93 = 640,295.78/x
  3. Step 3: Cross multiply
    731,449.94x = 1,007,157.93 × 640,295.78
  4. Step 4: Simplify right side
    731,449.94x = 644,878,972,372.54
  5. Step 5: Solve for x
    x = 644,878,972,372.54/731,449.94
  6. Step 6: Final answer
    x = 881,644.71

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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.