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Finding the Fourth Proportional to 563,622.84, 777,781.44 and 308,968.56

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Solution

The fourth proportional to 563,622.84, 777,781.44 and 308,968.56 is: 426,366.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    563,622.84 : 777,781.44 = 308,968.56 : x
  2. Step 2: Convert to fraction form
    563,622.84/777,781.44 = 308,968.56/x
  3. Step 3: Cross multiply
    563,622.84x = 777,781.44 × 308,968.56
  4. Step 4: Simplify right side
    563,622.84x = 240,310,011,511.53
  5. Step 5: Solve for x
    x = 240,310,011,511.53/563,622.84
  6. Step 6: Final answer
    x = 426,366.70

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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.