Home / 509,176.64-702,679.20-307,856.96

Finding the Fourth Proportional to 509,176.64, 702,679.20 and 307,856.96

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Solution

The fourth proportional to 509,176.64, 702,679.20 and 307,856.96 is: 424,851.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,176.64 : 702,679.20 = 307,856.96 : x
  2. Step 2: Convert to fraction form
    509,176.64/702,679.20 = 307,856.96/x
  3. Step 3: Cross multiply
    509,176.64x = 702,679.20 × 307,856.96
  4. Step 4: Simplify right side
    509,176.64x = 216,324,682,367.23
  5. Step 5: Solve for x
    x = 216,324,682,367.23/509,176.64
  6. Step 6: Final answer
    x = 424,851.94

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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.