Home / 661,242.24-911,669.55-428,257.54

Finding the Fourth Proportional to 661,242.24, 911,669.55 and 428,257.54

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Solution

The fourth proportional to 661,242.24, 911,669.55 and 428,257.54 is: 590,448.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,242.24 : 911,669.55 = 428,257.54 : x
  2. Step 2: Convert to fraction form
    661,242.24/911,669.55 = 428,257.54/x
  3. Step 3: Cross multiply
    661,242.24x = 911,669.55 × 428,257.54
  4. Step 4: Simplify right side
    661,242.24x = 390,429,356,496.73
  5. Step 5: Solve for x
    x = 390,429,356,496.73/661,242.24
  6. Step 6: Final answer
    x = 590,448.30

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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.