Home / 690,212.14-952,660.59-399,776.92

Finding the Fourth Proportional to 690,212.14, 952,660.59 and 399,776.92

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Solution

The fourth proportional to 690,212.14, 952,660.59 and 399,776.92 is: 551,789.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,212.14 : 952,660.59 = 399,776.92 : x
  2. Step 2: Convert to fraction form
    690,212.14/952,660.59 = 399,776.92/x
  3. Step 3: Cross multiply
    690,212.14x = 952,660.59 × 399,776.92
  4. Step 4: Simplify right side
    690,212.14x = 380,851,714,843.51
  5. Step 5: Solve for x
    x = 380,851,714,843.51/690,212.14
  6. Step 6: Final answer
    x = 551,789.36

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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.