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Finding the Fourth Proportional to 636,052.80, 878,531.80 and 475,621.60

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Solution

The fourth proportional to 636,052.80, 878,531.80 and 475,621.60 is: 656,940.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,052.80 : 878,531.80 = 475,621.60 : x
  2. Step 2: Convert to fraction form
    636,052.80/878,531.80 = 475,621.60/x
  3. Step 3: Cross multiply
    636,052.80x = 878,531.80 × 475,621.60
  4. Step 4: Simplify right side
    636,052.80x = 417,848,700,366.88
  5. Step 5: Solve for x
    x = 417,848,700,366.88/636,052.80
  6. Step 6: Final answer
    x = 656,940.27

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1.5x scale

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.