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Finding the Fourth Proportional to 659,804.20, 910,540.38 and 357,998.20

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Solution

The fourth proportional to 659,804.20, 910,540.38 and 357,998.20 is: 494,043.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,804.20 : 910,540.38 = 357,998.20 : x
  2. Step 2: Convert to fraction form
    659,804.20/910,540.38 = 357,998.20/x
  3. Step 3: Cross multiply
    659,804.20x = 910,540.38 × 357,998.20
  4. Step 4: Simplify right side
    659,804.20x = 325,971,817,067.32
  5. Step 5: Solve for x
    x = 325,971,817,067.32/659,804.20
  6. Step 6: Final answer
    x = 494,043.26

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Double scale
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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.