Home / 691,972.36-954,955.03-390,159.88

Finding the Fourth Proportional to 691,972.36, 954,955.03 and 390,159.88

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Solution

The fourth proportional to 691,972.36, 954,955.03 and 390,159.88 is: 538,439.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,972.36 : 954,955.03 = 390,159.88 : x
  2. Step 2: Convert to fraction form
    691,972.36/954,955.03 = 390,159.88/x
  3. Step 3: Cross multiply
    691,972.36x = 954,955.03 × 390,159.88
  4. Step 4: Simplify right side
    691,972.36x = 372,585,135,135.42
  5. Step 5: Solve for x
    x = 372,585,135,135.42/691,972.36
  6. Step 6: Final answer
    x = 538,439.34

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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.