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Finding the Fourth Proportional to 384,689.90, 576,519.01 and 299,403.77

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Solution

The fourth proportional to 384,689.90, 576,519.01 and 299,403.77 is: 448,704.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,689.90 : 576,519.01 = 299,403.77 : x
  2. Step 2: Convert to fraction form
    384,689.90/576,519.01 = 299,403.77/x
  3. Step 3: Cross multiply
    384,689.90x = 576,519.01 × 299,403.77
  4. Step 4: Simplify right side
    384,689.90x = 172,611,961,439.56
  5. Step 5: Solve for x
    x = 172,611,961,439.56/384,689.90
  6. Step 6: Final answer
    x = 448,704.16

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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.