Home / 725,739.89-1,001,644.80-420,002.42

Finding the Fourth Proportional to 725,739.89, 1,001,644.80 and 420,002.42

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Solution

The fourth proportional to 725,739.89, 1,001,644.80 and 420,002.42 is: 579,674.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    725,739.89 : 1,001,644.80 = 420,002.42 : x
  2. Step 2: Convert to fraction form
    725,739.89/1,001,644.80 = 420,002.42/x
  3. Step 3: Cross multiply
    725,739.89x = 1,001,644.80 × 420,002.42
  4. Step 4: Simplify right side
    725,739.89x = 420,693,236,645.65
  5. Step 5: Solve for x
    x = 420,693,236,645.65/725,739.89
  6. Step 6: Final answer
    x = 579,674.95

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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.