Home / 691,022.43-953,643.42-404,634.78

Finding the Fourth Proportional to 691,022.43, 953,643.42 and 404,634.78

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Solution

The fourth proportional to 691,022.43, 953,643.42 and 404,634.78 is: 558,415.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,022.43 : 953,643.42 = 404,634.78 : x
  2. Step 2: Convert to fraction form
    691,022.43/953,643.42 = 404,634.78/x
  3. Step 3: Cross multiply
    691,022.43x = 953,643.42 × 404,634.78
  4. Step 4: Simplify right side
    691,022.43x = 385,877,295,450.15
  5. Step 5: Solve for x
    x = 385,877,295,450.15/691,022.43
  6. Step 6: Final answer
    x = 558,415.01

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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.