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Finding the Fourth Proportional to 495,694.10, 684,060.12 and 280,876.03

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Solution

The fourth proportional to 495,694.10, 684,060.12 and 280,876.03 is: 387,610.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,694.10 : 684,060.12 = 280,876.03 : x
  2. Step 2: Convert to fraction form
    495,694.10/684,060.12 = 280,876.03/x
  3. Step 3: Cross multiply
    495,694.10x = 684,060.12 × 280,876.03
  4. Step 4: Simplify right side
    495,694.10x = 192,136,090,786.92
  5. Step 5: Solve for x
    x = 192,136,090,786.92/495,694.10
  6. Step 6: Final answer
    x = 387,610.20

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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.