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Finding the Fourth Proportional to 610,520.61, 842,462.79 and 338,587.68

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Solution

The fourth proportional to 610,520.61, 842,462.79 and 338,587.68 is: 467,220.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,520.61 : 842,462.79 = 338,587.68 : x
  2. Step 2: Convert to fraction form
    610,520.61/842,462.79 = 338,587.68/x
  3. Step 3: Cross multiply
    610,520.61x = 842,462.79 × 338,587.68
  4. Step 4: Simplify right side
    610,520.61x = 285,247,521,552.43
  5. Step 5: Solve for x
    x = 285,247,521,552.43/610,520.61
  6. Step 6: Final answer
    x = 467,220.13

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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.