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Finding the Fourth Proportional to 490,856.85, 677,718 and 375,932.43

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Solution

The fourth proportional to 490,856.85, 677,718 and 375,932.43 is: 519,043.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,856.85 : 677,718 = 375,932.43 : x
  2. Step 2: Convert to fraction form
    490,856.85/677,718 = 375,932.43/x
  3. Step 3: Cross multiply
    490,856.85x = 677,718 × 375,932.43
  4. Step 4: Simplify right side
    490,856.85x = 254,776,174,594.74
  5. Step 5: Solve for x
    x = 254,776,174,594.74/490,856.85
  6. Step 6: Final answer
    x = 519,043.74

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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.