Home / 428,778.45-591,685.43-237,784.77

Finding the Fourth Proportional to 428,778.45, 591,685.43 and 237,784.77

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Solution

The fourth proportional to 428,778.45, 591,685.43 and 237,784.77 is: 328,126.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,778.45 : 591,685.43 = 237,784.77 : x
  2. Step 2: Convert to fraction form
    428,778.45/591,685.43 = 237,784.77/x
  3. Step 3: Cross multiply
    428,778.45x = 591,685.43 × 237,784.77
  4. Step 4: Simplify right side
    428,778.45x = 140,693,782,695.98
  5. Step 5: Solve for x
    x = 140,693,782,695.98/428,778.45
  6. Step 6: Final answer
    x = 328,126.99

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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.