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Finding the Fourth Proportional to 563,290.47, 777,371.97 and 321,650.67

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Solution

The fourth proportional to 563,290.47, 777,371.97 and 321,650.67 is: 443,895.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    563,290.47 : 777,371.97 = 321,650.67 : x
  2. Step 2: Convert to fraction form
    563,290.47/777,371.97 = 321,650.67/x
  3. Step 3: Cross multiply
    563,290.47x = 777,371.97 × 321,650.67
  4. Step 4: Simplify right side
    563,290.47x = 250,042,214,989.72
  5. Step 5: Solve for x
    x = 250,042,214,989.72/563,290.47
  6. Step 6: Final answer
    x = 443,895.70

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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.