Home / 753,338.05-1,128,825.88-640,554.46

Finding the Fourth Proportional to 753,338.05, 1,128,825.88 and 640,554.46

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Solution

The fourth proportional to 753,338.05, 1,128,825.88 and 640,554.46 is: 959,827.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    753,338.05 : 1,128,825.88 = 640,554.46 : x
  2. Step 2: Convert to fraction form
    753,338.05/1,128,825.88 = 640,554.46/x
  3. Step 3: Cross multiply
    753,338.05x = 1,128,825.88 × 640,554.46
  4. Step 4: Simplify right side
    753,338.05x = 723,074,451,997.43
  5. Step 5: Solve for x
    x = 723,074,451,997.43/753,338.05
  6. Step 6: Final answer
    x = 959,827.33

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.