Home / 1,005,073.45-1,387,324.60-643,471.23

Finding the Fourth Proportional to 1,005,073.45, 1,387,324.60 and 643,471.23

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Solution

The fourth proportional to 1,005,073.45, 1,387,324.60 and 643,471.23 is: 888,197.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,005,073.45 : 1,387,324.60 = 643,471.23 : x
  2. Step 2: Convert to fraction form
    1,005,073.45/1,387,324.60 = 643,471.23/x
  3. Step 3: Cross multiply
    1,005,073.45x = 1,387,324.60 × 643,471.23
  4. Step 4: Simplify right side
    1,005,073.45x = 892,703,466,771.26
  5. Step 5: Solve for x
    x = 892,703,466,771.26/1,005,073.45
  6. Step 6: Final answer
    x = 888,197.24

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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.