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Finding the Fourth Proportional to 611,639.85, 844,063.03 and 339,733.05

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Solution

The fourth proportional to 611,639.85, 844,063.03 and 339,733.05 is: 468,831.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,639.85 : 844,063.03 = 339,733.05 : x
  2. Step 2: Convert to fraction form
    611,639.85/844,063.03 = 339,733.05/x
  3. Step 3: Cross multiply
    611,639.85x = 844,063.03 × 339,733.05
  4. Step 4: Simplify right side
    611,639.85x = 286,756,106,724.81
  5. Step 5: Solve for x
    x = 286,756,106,724.81/611,639.85
  6. Step 6: Final answer
    x = 468,831.63

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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.