Home / 725,326.34-1,000,972.89-398,633.42

Finding the Fourth Proportional to 725,326.34, 1,000,972.89 and 398,633.42

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Solution

The fourth proportional to 725,326.34, 1,000,972.89 and 398,633.42 is: 550,126.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    725,326.34 : 1,000,972.89 = 398,633.42 : x
  2. Step 2: Convert to fraction form
    725,326.34/1,000,972.89 = 398,633.42/x
  3. Step 3: Cross multiply
    725,326.34x = 1,000,972.89 × 398,633.42
  4. Step 4: Simplify right side
    725,326.34x = 399,021,246,467.98
  5. Step 5: Solve for x
    x = 399,021,246,467.98/725,326.34
  6. Step 6: Final answer
    x = 550,126.51

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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.