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Finding the Fourth Proportional to 647,916.78, 894,149.52 and 361,492.23

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Solution

The fourth proportional to 647,916.78, 894,149.52 and 361,492.23 is: 498,872.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,916.78 : 894,149.52 = 361,492.23 : x
  2. Step 2: Convert to fraction form
    647,916.78/894,149.52 = 361,492.23/x
  3. Step 3: Cross multiply
    647,916.78x = 894,149.52 × 361,492.23
  4. Step 4: Simplify right side
    647,916.78x = 323,228,103,938.23
  5. Step 5: Solve for x
    x = 323,228,103,938.23/647,916.78
  6. Step 6: Final answer
    x = 498,872.87

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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.