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Finding the Fourth Proportional to 672,502.78, 928,041.73 and 366,581.76

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Solution

The fourth proportional to 672,502.78, 928,041.73 and 366,581.76 is: 505,876.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,502.78 : 928,041.73 = 366,581.76 : x
  2. Step 2: Convert to fraction form
    672,502.78/928,041.73 = 366,581.76/x
  3. Step 3: Cross multiply
    672,502.78x = 928,041.73 × 366,581.76
  4. Step 4: Simplify right side
    672,502.78x = 340,203,170,736.85
  5. Step 5: Solve for x
    x = 340,203,170,736.85/672,502.78
  6. Step 6: Final answer
    x = 505,876.23

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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.