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Finding the Fourth Proportional to 404,956.20, 607,434.30 and 399,051.30

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Solution

The fourth proportional to 404,956.20, 607,434.30 and 399,051.30 is: 598,576.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,956.20 : 607,434.30 = 399,051.30 : x
  2. Step 2: Convert to fraction form
    404,956.20/607,434.30 = 399,051.30/x
  3. Step 3: Cross multiply
    404,956.20x = 607,434.30 × 399,051.30
  4. Step 4: Simplify right side
    404,956.20x = 242,397,447,079.59
  5. Step 5: Solve for x
    x = 242,397,447,079.59/404,956.20
  6. Step 6: Final answer
    x = 598,576.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.