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Finding the Fourth Proportional to 624,891.26, 862,345.64 and 338,404.79

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Solution

The fourth proportional to 624,891.26, 862,345.64 and 338,404.79 is: 466,996.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,891.26 : 862,345.64 = 338,404.79 : x
  2. Step 2: Convert to fraction form
    624,891.26/862,345.64 = 338,404.79/x
  3. Step 3: Cross multiply
    624,891.26x = 862,345.64 × 338,404.79
  4. Step 4: Simplify right side
    624,891.26x = 291,821,892,189.32
  5. Step 5: Solve for x
    x = 291,821,892,189.32/624,891.26
  6. Step 6: Final answer
    x = 466,996.28

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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.