Home / 1,005,173.79-1,387,462.82-643,571.43

Finding the Fourth Proportional to 1,005,173.79, 1,387,462.82 and 643,571.43

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Solution

The fourth proportional to 1,005,173.79, 1,387,462.82 and 643,571.43 is: 888,335.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,005,173.79 : 1,387,462.82 = 643,571.43 : x
  2. Step 2: Convert to fraction form
    1,005,173.79/1,387,462.82 = 643,571.43/x
  3. Step 3: Cross multiply
    1,005,173.79x = 1,387,462.82 × 643,571.43
  4. Step 4: Simplify right side
    1,005,173.79x = 892,931,427,921.38
  5. Step 5: Solve for x
    x = 892,931,427,921.38/1,005,173.79
  6. Step 6: Final answer
    x = 888,335.37

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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.