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Finding the Fourth Proportional to 610,671.48, 842,684.76 and 338,728.56

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Solution

The fourth proportional to 610,671.48, 842,684.76 and 338,728.56 is: 467,422.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,671.48 : 842,684.76 = 338,728.56 : x
  2. Step 2: Convert to fraction form
    610,671.48/842,684.76 = 338,728.56/x
  3. Step 3: Cross multiply
    610,671.48x = 842,684.76 × 338,728.56
  4. Step 4: Simplify right side
    610,671.48x = 285,441,395,288.75
  5. Step 5: Solve for x
    x = 285,441,395,288.75/610,671.48
  6. Step 6: Final answer
    x = 467,422.18

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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.