Home / 690,169.15-952,186.91-399,622.12

Finding the Fourth Proportional to 690,169.15, 952,186.91 and 399,622.12

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Solution

The fourth proportional to 690,169.15, 952,186.91 and 399,622.12 is: 551,335.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,169.15 : 952,186.91 = 399,622.12 : x
  2. Step 2: Convert to fraction form
    690,169.15/952,186.91 = 399,622.12/x
  3. Step 3: Cross multiply
    690,169.15x = 952,186.91 × 399,622.12
  4. Step 4: Simplify right side
    690,169.15x = 380,514,949,612.34
  5. Step 5: Solve for x
    x = 380,514,949,612.34/690,169.15
  6. Step 6: Final answer
    x = 551,335.79

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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.