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Finding the Fourth Proportional to 447,886.90, 670,430.67 and 342,003.70

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Solution

The fourth proportional to 447,886.90, 670,430.67 and 342,003.70 is: 511,936.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,886.90 : 670,430.67 = 342,003.70 : x
  2. Step 2: Convert to fraction form
    447,886.90/670,430.67 = 342,003.70/x
  3. Step 3: Cross multiply
    447,886.90x = 670,430.67 × 342,003.70
  4. Step 4: Simplify right side
    447,886.90x = 229,289,769,733.48
  5. Step 5: Solve for x
    x = 229,289,769,733.48/447,886.90
  6. Step 6: Final answer
    x = 511,936.76

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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.