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Finding the Fourth Proportional to 556,876.72, 768,490.26 and 302,227.90

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Solution

The fourth proportional to 556,876.72, 768,490.26 and 302,227.90 is: 417,074.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,876.72 : 768,490.26 = 302,227.90 : x
  2. Step 2: Convert to fraction form
    556,876.72/768,490.26 = 302,227.90/x
  3. Step 3: Cross multiply
    556,876.72x = 768,490.26 × 302,227.90
  4. Step 4: Simplify right side
    556,876.72x = 232,259,197,450.25
  5. Step 5: Solve for x
    x = 232,259,197,450.25/556,876.72
  6. Step 6: Final answer
    x = 417,074.71

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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.