Home / 631,624.20-871,643.58-345,144.27

Finding the Fourth Proportional to 631,624.20, 871,643.58 and 345,144.27

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Solution

The fourth proportional to 631,624.20, 871,643.58 and 345,144.27 is: 476,300.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,624.20 : 871,643.58 = 345,144.27 : x
  2. Step 2: Convert to fraction form
    631,624.20/871,643.58 = 345,144.27/x
  3. Step 3: Cross multiply
    631,624.20x = 871,643.58 × 345,144.27
  4. Step 4: Simplify right side
    631,624.20x = 300,842,787,119.29
  5. Step 5: Solve for x
    x = 300,842,787,119.29/631,624.20
  6. Step 6: Final answer
    x = 476,300.29

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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.