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Finding the Fourth Proportional to 559,660.75, 772,456.43 and 355,671.86

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Solution

The fourth proportional to 559,660.75, 772,456.43 and 355,671.86 is: 490,906.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,660.75 : 772,456.43 = 355,671.86 : x
  2. Step 2: Convert to fraction form
    559,660.75/772,456.43 = 355,671.86/x
  3. Step 3: Cross multiply
    559,660.75x = 772,456.43 × 355,671.86
  4. Step 4: Simplify right side
    559,660.75x = 274,741,012,253.96
  5. Step 5: Solve for x
    x = 274,741,012,253.96/559,660.75
  6. Step 6: Final answer
    x = 490,906.35

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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.