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Finding the Fourth Proportional to 563,321.76, 777,486.08 and 359,436

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Solution

The fourth proportional to 563,321.76, 777,486.08 and 359,436 is: 496,086.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    563,321.76 : 777,486.08 = 359,436 : x
  2. Step 2: Convert to fraction form
    563,321.76/777,486.08 = 359,436/x
  3. Step 3: Cross multiply
    563,321.76x = 777,486.08 × 359,436
  4. Step 4: Simplify right side
    563,321.76x = 279,456,486,650.88
  5. Step 5: Solve for x
    x = 279,456,486,650.88/563,321.76
  6. Step 6: Final answer
    x = 496,086.80

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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.