Home / 690,215.14-952,664.73-399,779.92

Finding the Fourth Proportional to 690,215.14, 952,664.73 and 399,779.92

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Solution

The fourth proportional to 690,215.14, 952,664.73 and 399,779.92 is: 551,793.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,215.14 : 952,664.73 = 399,779.92 : x
  2. Step 2: Convert to fraction form
    690,215.14/952,664.73 = 399,779.92/x
  3. Step 3: Cross multiply
    690,215.14x = 952,664.73 × 399,779.92
  4. Step 4: Simplify right side
    690,215.14x = 380,856,229,546.22
  5. Step 5: Solve for x
    x = 380,856,229,546.22/690,215.14
  6. Step 6: Final answer
    x = 551,793.50

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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.