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Finding the Fourth Proportional to 563,283.59, 777,362.49 and 321,643.79

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Solution

The fourth proportional to 563,283.59, 777,362.49 and 321,643.79 is: 443,886.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    563,283.59 : 777,362.49 = 321,643.79 : x
  2. Step 2: Convert to fraction form
    563,283.59/777,362.49 = 321,643.79/x
  3. Step 3: Cross multiply
    563,283.59x = 777,362.49 × 321,643.79
  4. Step 4: Simplify right side
    563,283.59x = 250,033,811,992.41
  5. Step 5: Solve for x
    x = 250,033,811,992.41/563,283.59
  6. Step 6: Final answer
    x = 443,886.20

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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.