Home / 805,688.61-1,208,533.22-206,649.72

Finding the Fourth Proportional to 805,688.61, 1,208,533.22 and 206,649.72

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Solution

The fourth proportional to 805,688.61, 1,208,533.22 and 206,649.72 is: 309,974.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    805,688.61 : 1,208,533.22 = 206,649.72 : x
  2. Step 2: Convert to fraction form
    805,688.61/1,208,533.22 = 206,649.72/x
  3. Step 3: Cross multiply
    805,688.61x = 1,208,533.22 × 206,649.72
  4. Step 4: Simplify right side
    805,688.61x = 249,743,051,523.70
  5. Step 5: Solve for x
    x = 249,743,051,523.70/805,688.61
  6. Step 6: Final answer
    x = 309,974.66

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.