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Finding the Fourth Proportional to 608,525.71, 839,002.04 and 390,349.71

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Solution

The fourth proportional to 608,525.71, 839,002.04 and 390,349.71 is: 538,192.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,525.71 : 839,002.04 = 390,349.71 : x
  2. Step 2: Convert to fraction form
    608,525.71/839,002.04 = 390,349.71/x
  3. Step 3: Cross multiply
    608,525.71x = 839,002.04 × 390,349.71
  4. Step 4: Simplify right side
    608,525.71x = 327,504,203,003.41
  5. Step 5: Solve for x
    x = 327,504,203,003.41/608,525.71
  6. Step 6: Final answer
    x = 538,192.88

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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.