Home / 409,724.84-614,650.57-139,789.77

Finding the Fourth Proportional to 409,724.84, 614,650.57 and 139,789.77

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Solution

The fourth proportional to 409,724.84, 614,650.57 and 139,789.77 is: 209,706.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    409,724.84 : 614,650.57 = 139,789.77 : x
  2. Step 2: Convert to fraction form
    409,724.84/614,650.57 = 139,789.77/x
  3. Step 3: Cross multiply
    409,724.84x = 614,650.57 × 139,789.77
  4. Step 4: Simplify right side
    409,724.84x = 85,921,861,810.67
  5. Step 5: Solve for x
    x = 85,921,861,810.67/409,724.84
  6. Step 6: Final answer
    x = 209,706.26

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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.