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Finding the Fourth Proportional to 636,051.80, 878,530.42 and 475,620.60

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Solution

The fourth proportional to 636,051.80, 878,530.42 and 475,620.60 is: 656,938.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,051.80 : 878,530.42 = 475,620.60 : x
  2. Step 2: Convert to fraction form
    636,051.80/878,530.42 = 475,620.60/x
  3. Step 3: Cross multiply
    636,051.80x = 878,530.42 × 475,620.60
  4. Step 4: Simplify right side
    636,051.80x = 417,847,165,478.65
  5. Step 5: Solve for x
    x = 417,847,165,478.65/636,051.80
  6. Step 6: Final answer
    x = 656,938.89

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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.