Home / 722,459.12-996,993.57-400,190.09

Finding the Fourth Proportional to 722,459.12, 996,993.57 and 400,190.09

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Solution

The fourth proportional to 722,459.12, 996,993.57 and 400,190.09 is: 552,262.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,459.12 : 996,993.57 = 400,190.09 : x
  2. Step 2: Convert to fraction form
    722,459.12/996,993.57 = 400,190.09/x
  3. Step 3: Cross multiply
    722,459.12x = 996,993.57 × 400,190.09
  4. Step 4: Simplify right side
    722,459.12x = 398,986,943,023.47
  5. Step 5: Solve for x
    x = 398,986,943,023.47/722,459.12
  6. Step 6: Final answer
    x = 552,262.31

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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.