Home / 631,231,163.80-871,125,908.42-352,772,679.13

Finding the Fourth Proportional to 631,231,163.80, 871,125,908.42 and 352,772,679.13

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Solution

The fourth proportional to 631,231,163.80, 871,125,908.42 and 352,772,679.13 is: 486,841,331.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,231,163.80 : 871,125,908.42 = 352,772,679.13 : x
  2. Step 2: Convert to fraction form
    631,231,163.80/871,125,908.42 = 352,772,679.13/x
  3. Step 3: Cross multiply
    631,231,163.80x = 871,125,908.42 × 352,772,679.13
  4. Step 4: Simplify right side
    631,231,163.80x = 307,309,420,572,878,400
  5. Step 5: Solve for x
    x = 307,309,420,572,878,400/631,231,163.80
  6. Step 6: Final answer
    x = 486,841,331.98

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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.