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Finding the Fourth Proportional to 610,616.70, 842,751.90 and 338,772.15

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Solution

The fourth proportional to 610,616.70, 842,751.90 and 338,772.15 is: 467,561.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,616.70 : 842,751.90 = 338,772.15 : x
  2. Step 2: Convert to fraction form
    610,616.70/842,751.90 = 338,772.15/x
  3. Step 3: Cross multiply
    610,616.70x = 842,751.90 × 338,772.15
  4. Step 4: Simplify right side
    610,616.70x = 285,500,873,079.59
  5. Step 5: Solve for x
    x = 285,500,873,079.59/610,616.70
  6. Step 6: Final answer
    x = 467,561.52

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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.