Home / 409,723.84-614,649.07-139,788.77

Finding the Fourth Proportional to 409,723.84, 614,649.07 and 139,788.77

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Solution

The fourth proportional to 409,723.84, 614,649.07 and 139,788.77 is: 209,704.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    409,723.84 : 614,649.07 = 139,788.77 : x
  2. Step 2: Convert to fraction form
    409,723.84/614,649.07 = 139,788.77/x
  3. Step 3: Cross multiply
    409,723.84x = 614,649.07 × 139,788.77
  4. Step 4: Simplify right side
    409,723.84x = 85,921,037,476.94
  5. Step 5: Solve for x
    x = 85,921,037,476.94/409,723.84
  6. Step 6: Final answer
    x = 209,704.76

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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.