Home / 739,019.43-1,019,847.51-399,487.68

Finding the Fourth Proportional to 739,019.43, 1,019,847.51 and 399,487.68

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Solution

The fourth proportional to 739,019.43, 1,019,847.51 and 399,487.68 is: 551,293.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,019.43 : 1,019,847.51 = 399,487.68 : x
  2. Step 2: Convert to fraction form
    739,019.43/1,019,847.51 = 399,487.68/x
  3. Step 3: Cross multiply
    739,019.43x = 1,019,847.51 × 399,487.68
  4. Step 4: Simplify right side
    739,019.43x = 407,416,515,723.68
  5. Step 5: Solve for x
    x = 407,416,515,723.68/739,019.43
  6. Step 6: Final answer
    x = 551,293.37

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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.