Home / 725,333.34-1,000,982.55-398,640.42

Finding the Fourth Proportional to 725,333.34, 1,000,982.55 and 398,640.42

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Solution

The fourth proportional to 725,333.34, 1,000,982.55 and 398,640.42 is: 550,136.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    725,333.34 : 1,000,982.55 = 398,640.42 : x
  2. Step 2: Convert to fraction form
    725,333.34/1,000,982.55 = 398,640.42/x
  3. Step 3: Cross multiply
    725,333.34x = 1,000,982.55 × 398,640.42
  4. Step 4: Simplify right side
    725,333.34x = 399,032,104,144.67
  5. Step 5: Solve for x
    x = 399,032,104,144.67/725,333.34
  6. Step 6: Final answer
    x = 550,136.17

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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.