Home / 739,021.68-1,019,850.62-399,489.93

Finding the Fourth Proportional to 739,021.68, 1,019,850.62 and 399,489.93

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Solution

The fourth proportional to 739,021.68, 1,019,850.62 and 399,489.93 is: 551,296.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,021.68 : 1,019,850.62 = 399,489.93 : x
  2. Step 2: Convert to fraction form
    739,021.68/1,019,850.62 = 399,489.93/x
  3. Step 3: Cross multiply
    739,021.68x = 1,019,850.62 × 399,489.93
  4. Step 4: Simplify right side
    739,021.68x = 407,420,050,796.81
  5. Step 5: Solve for x
    x = 407,420,050,796.81/739,021.68
  6. Step 6: Final answer
    x = 551,296.48

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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.