Home / 631,439.64-871,389.78-344,964.51

Finding the Fourth Proportional to 631,439.64, 871,389.78 and 344,964.51

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Solution

The fourth proportional to 631,439.64, 871,389.78 and 344,964.51 is: 476,052.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,439.64 : 871,389.78 = 344,964.51 : x
  2. Step 2: Convert to fraction form
    631,439.64/871,389.78 = 344,964.51/x
  3. Step 3: Cross multiply
    631,439.64x = 871,389.78 × 344,964.51
  4. Step 4: Simplify right side
    631,439.64x = 300,598,548,476.71
  5. Step 5: Solve for x
    x = 300,598,548,476.71/631,439.64
  6. Step 6: Final answer
    x = 476,052.70

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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.