Home / 722,399.72-996,867.81-400,090.59

Finding the Fourth Proportional to 722,399.72, 996,867.81 and 400,090.59

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Solution

The fourth proportional to 722,399.72, 996,867.81 and 400,090.59 is: 552,100.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,399.72 : 996,867.81 = 400,090.59 : x
  2. Step 2: Convert to fraction form
    722,399.72/996,867.81 = 400,090.59/x
  3. Step 3: Cross multiply
    722,399.72x = 996,867.81 × 400,090.59
  4. Step 4: Simplify right side
    722,399.72x = 398,837,430,254.91
  5. Step 5: Solve for x
    x = 398,837,430,254.91/722,399.72
  6. Step 6: Final answer
    x = 552,100.76

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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.