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Finding the Fourth Proportional to 563,099.50, 777,089.85 and 321,377.22

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Solution

The fourth proportional to 563,099.50, 777,089.85 and 321,377.22 is: 443,507.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    563,099.50 : 777,089.85 = 321,377.22 : x
  2. Step 2: Convert to fraction form
    563,099.50/777,089.85 = 321,377.22/x
  3. Step 3: Cross multiply
    563,099.50x = 777,089.85 × 321,377.22
  4. Step 4: Simplify right side
    563,099.50x = 249,738,976,285.80
  5. Step 5: Solve for x
    x = 249,738,976,285.80/563,099.50
  6. Step 6: Final answer
    x = 443,507.73

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1.5x scale

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.