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Finding the Fourth Proportional to 610,355.25, 842,300.39 and 338,434.62

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Solution

The fourth proportional to 610,355.25, 842,300.39 and 338,434.62 is: 467,045.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,355.25 : 842,300.39 = 338,434.62 : x
  2. Step 2: Convert to fraction form
    610,355.25/842,300.39 = 338,434.62/x
  3. Step 3: Cross multiply
    610,355.25x = 842,300.39 × 338,434.62
  4. Step 4: Simplify right side
    610,355.25x = 285,063,610,723.33
  5. Step 5: Solve for x
    x = 285,063,610,723.33/610,355.25
  6. Step 6: Final answer
    x = 467,045.40

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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.