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Finding the Fourth Proportional to 859,633.56, 1,289,707.92 and 347,034.78

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Solution

The fourth proportional to 859,633.56, 1,289,707.92 and 347,034.78 is: 520,656.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,633.56 : 1,289,707.92 = 347,034.78 : x
  2. Step 2: Convert to fraction form
    859,633.56/1,289,707.92 = 347,034.78/x
  3. Step 3: Cross multiply
    859,633.56x = 1,289,707.92 × 347,034.78
  4. Step 4: Simplify right side
    859,633.56x = 447,573,504,281.46
  5. Step 5: Solve for x
    x = 447,573,504,281.46/859,633.56
  6. Step 6: Final answer
    x = 520,656.16

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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.