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Finding the Fourth Proportional to 562,712.12, 776,542.92 and 308,079.44

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Solution

The fourth proportional to 562,712.12, 776,542.92 and 308,079.44 is: 425,149.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    562,712.12 : 776,542.92 = 308,079.44 : x
  2. Step 2: Convert to fraction form
    562,712.12/776,542.92 = 308,079.44/x
  3. Step 3: Cross multiply
    562,712.12x = 776,542.92 × 308,079.44
  4. Step 4: Simplify right side
    562,712.12x = 239,236,907,929.57
  5. Step 5: Solve for x
    x = 239,236,907,929.57/562,712.12
  6. Step 6: Final answer
    x = 425,149.73

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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.