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Finding the Fourth Proportional to 571,724.75, 856,443.60 and 343,894.56

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Solution

The fourth proportional to 571,724.75, 856,443.60 and 343,894.56 is: 515,154.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,724.75 : 856,443.60 = 343,894.56 : x
  2. Step 2: Convert to fraction form
    571,724.75/856,443.60 = 343,894.56/x
  3. Step 3: Cross multiply
    571,724.75x = 856,443.60 × 343,894.56
  4. Step 4: Simplify right side
    571,724.75x = 294,526,294,986.82
  5. Step 5: Solve for x
    x = 294,526,294,986.82/571,724.75
  6. Step 6: Final answer
    x = 515,154.01

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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.