Home / 948,728.40-1,309,634.73-643,223.22

Finding the Fourth Proportional to 948,728.40, 1,309,634.73 and 643,223.22

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Solution

The fourth proportional to 948,728.40, 1,309,634.73 and 643,223.22 is: 887,912.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    948,728.40 : 1,309,634.73 = 643,223.22 : x
  2. Step 2: Convert to fraction form
    948,728.40/1,309,634.73 = 643,223.22/x
  3. Step 3: Cross multiply
    948,728.40x = 1,309,634.73 × 643,223.22
  4. Step 4: Simplify right side
    948,728.40x = 842,387,468,054.43
  5. Step 5: Solve for x
    x = 842,387,468,054.43/948,728.40
  6. Step 6: Final answer
    x = 887,912.14

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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.