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Finding the Fourth Proportional to 563,519.20, 777,736.20 and 348,728.50

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Solution

The fourth proportional to 563,519.20, 777,736.20 and 348,728.50 is: 481,294.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    563,519.20 : 777,736.20 = 348,728.50 : x
  2. Step 2: Convert to fraction form
    563,519.20/777,736.20 = 348,728.50/x
  3. Step 3: Cross multiply
    563,519.20x = 777,736.20 × 348,728.50
  4. Step 4: Simplify right side
    563,519.20x = 271,218,778,421.70
  5. Step 5: Solve for x
    x = 271,218,778,421.70/563,519.20
  6. Step 6: Final answer
    x = 481,294.65

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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.