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Finding the Fourth Proportional to 610,686.63, 842,761.08 and 338,745.69

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Solution

The fourth proportional to 610,686.63, 842,761.08 and 338,745.69 is: 467,476.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,686.63 : 842,761.08 = 338,745.69 : x
  2. Step 2: Convert to fraction form
    610,686.63/842,761.08 = 338,745.69/x
  3. Step 3: Cross multiply
    610,686.63x = 842,761.08 × 338,745.69
  4. Step 4: Simplify right side
    610,686.63x = 285,481,683,549.75
  5. Step 5: Solve for x
    x = 285,481,683,549.75/610,686.63
  6. Step 6: Final answer
    x = 467,476.56

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1.5x scale

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.