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Finding the Fourth Proportional to 562,758.30, 776,606.40 and 308,109.42

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Solution

The fourth proportional to 562,758.30, 776,606.40 and 308,109.42 is: 425,190.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    562,758.30 : 776,606.40 = 308,109.42 : x
  2. Step 2: Convert to fraction form
    562,758.30/776,606.40 = 308,109.42/x
  3. Step 3: Cross multiply
    562,758.30x = 776,606.40 × 308,109.42
  4. Step 4: Simplify right side
    562,758.30x = 239,279,747,472.29
  5. Step 5: Solve for x
    x = 239,279,747,472.29/562,758.30
  6. Step 6: Final answer
    x = 425,190.97

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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.