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Finding the Fourth Proportional to 434,178.81, 650,480.86 and 424,730.97

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Solution

The fourth proportional to 434,178.81, 650,480.86 and 424,730.97 is: 636,326.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    434,178.81 : 650,480.86 = 424,730.97 : x
  2. Step 2: Convert to fraction form
    434,178.81/650,480.86 = 424,730.97/x
  3. Step 3: Cross multiply
    434,178.81x = 650,480.86 × 424,730.97
  4. Step 4: Simplify right side
    434,178.81x = 276,279,366,634.23
  5. Step 5: Solve for x
    x = 276,279,366,634.23/434,178.81
  6. Step 6: Final answer
    x = 636,326.23

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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.