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Finding the Fourth Proportional to 638,489.60, 881,115.37 and 366,575.03

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Solution

The fourth proportional to 638,489.60, 881,115.37 and 366,575.03 is: 505,873.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,489.60 : 881,115.37 = 366,575.03 : x
  2. Step 2: Convert to fraction form
    638,489.60/881,115.37 = 366,575.03/x
  3. Step 3: Cross multiply
    638,489.60x = 881,115.37 × 366,575.03
  4. Step 4: Simplify right side
    638,489.60x = 322,994,891,358.34
  5. Step 5: Solve for x
    x = 322,994,891,358.34/638,489.60
  6. Step 6: Final answer
    x = 505,873.38

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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.