Home / 631,749.96-871,816.50-345,273.48

Finding the Fourth Proportional to 631,749.96, 871,816.50 and 345,273.48

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Solution

The fourth proportional to 631,749.96, 871,816.50 and 345,273.48 is: 476,478.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,749.96 : 871,816.50 = 345,273.48 : x
  2. Step 2: Convert to fraction form
    631,749.96/871,816.50 = 345,273.48/x
  3. Step 3: Cross multiply
    631,749.96x = 871,816.50 × 345,273.48
  4. Step 4: Simplify right side
    631,749.96x = 301,015,116,876.42
  5. Step 5: Solve for x
    x = 301,015,116,876.42/631,749.96
  6. Step 6: Final answer
    x = 476,478.25

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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.