Home / 631,626.20-871,646.34-345,146.28

Finding the Fourth Proportional to 631,626.20, 871,646.34 and 345,146.28

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Solution

The fourth proportional to 631,626.20, 871,646.34 and 345,146.28 is: 476,303.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,626.20 : 871,646.34 = 345,146.28 : x
  2. Step 2: Convert to fraction form
    631,626.20/871,646.34 = 345,146.28/x
  3. Step 3: Cross multiply
    631,626.20x = 871,646.34 × 345,146.28
  4. Step 4: Simplify right side
    631,626.20x = 300,845,491,726.62
  5. Step 5: Solve for x
    x = 300,845,491,726.62/631,626.20
  6. Step 6: Final answer
    x = 476,303.06

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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.