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Finding the Fourth Proportional to 563,390.28, 777,484.71 and 308,736

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Solution

The fourth proportional to 563,390.28, 777,484.71 and 308,736 is: 426,059.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    563,390.28 : 777,484.71 = 308,736 : x
  2. Step 2: Convert to fraction form
    563,390.28/777,484.71 = 308,736/x
  3. Step 3: Cross multiply
    563,390.28x = 777,484.71 × 308,736
  4. Step 4: Simplify right side
    563,390.28x = 240,037,519,426.56
  5. Step 5: Solve for x
    x = 240,037,519,426.56/563,390.28
  6. Step 6: Final answer
    x = 426,059.04

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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.