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Finding the Fourth Proportional to 434,415.70, 651,623.55 and 404,891.20

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Solution

The fourth proportional to 434,415.70, 651,623.55 and 404,891.20 is: 607,336.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    434,415.70 : 651,623.55 = 404,891.20 : x
  2. Step 2: Convert to fraction form
    434,415.70/651,623.55 = 404,891.20/x
  3. Step 3: Cross multiply
    434,415.70x = 651,623.55 × 404,891.20
  4. Step 4: Simplify right side
    434,415.70x = 263,836,641,107.76
  5. Step 5: Solve for x
    x = 263,836,641,107.76/434,415.70
  6. Step 6: Final answer
    x = 607,336.80

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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.