Home / 631,629.42-871,650.89-345,149.53

Finding the Fourth Proportional to 631,629.42, 871,650.89 and 345,149.53

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Solution

The fourth proportional to 631,629.42, 871,650.89 and 345,149.53 is: 476,307.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,629.42 : 871,650.89 = 345,149.53 : x
  2. Step 2: Convert to fraction form
    631,629.42/871,650.89 = 345,149.53/x
  3. Step 3: Cross multiply
    631,629.42x = 871,650.89 × 345,149.53
  4. Step 4: Simplify right side
    631,629.42x = 300,849,891,102.71
  5. Step 5: Solve for x
    x = 300,849,891,102.71/631,629.42
  6. Step 6: Final answer
    x = 476,307.60

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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.