Home / 840,329.80-1,259,904.22-307,781.64

Finding the Fourth Proportional to 840,329.80, 1,259,904.22 and 307,781.64

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Solution

The fourth proportional to 840,329.80, 1,259,904.22 and 307,781.64 is: 461,456.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    840,329.80 : 1,259,904.22 = 307,781.64 : x
  2. Step 2: Convert to fraction form
    840,329.80/1,259,904.22 = 307,781.64/x
  3. Step 3: Cross multiply
    840,329.80x = 1,259,904.22 × 307,781.64
  4. Step 4: Simplify right side
    840,329.80x = 387,775,387,074.52
  5. Step 5: Solve for x
    x = 387,775,387,074.52/840,329.80
  6. Step 6: Final answer
    x = 461,456.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.