Home / 631,621.19-871,639.45-345,141.27

Finding the Fourth Proportional to 631,621.19, 871,639.45 and 345,141.27

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Solution

The fourth proportional to 631,621.19, 871,639.45 and 345,141.27 is: 476,296.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,621.19 : 871,639.45 = 345,141.27 : x
  2. Step 2: Convert to fraction form
    631,621.19/871,639.45 = 345,141.27/x
  3. Step 3: Cross multiply
    631,621.19x = 871,639.45 × 345,141.27
  4. Step 4: Simplify right side
    631,621.19x = 300,838,745,892.25
  5. Step 5: Solve for x
    x = 300,838,745,892.25/631,621.19
  6. Step 6: Final answer
    x = 476,296.16

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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.