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Finding the Fourth Proportional to 563,628.84, 777,789.72 and 308,974.56

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Solution

The fourth proportional to 563,628.84, 777,789.72 and 308,974.56 is: 426,374.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    563,628.84 : 777,789.72 = 308,974.56 : x
  2. Step 2: Convert to fraction form
    563,628.84/777,789.72 = 308,974.56/x
  3. Step 3: Cross multiply
    563,628.84x = 777,789.72 × 308,974.56
  4. Step 4: Simplify right side
    563,628.84x = 240,317,236,509.52
  5. Step 5: Solve for x
    x = 240,317,236,509.52/563,628.84
  6. Step 6: Final answer
    x = 426,374.98

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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.