Home / 725,611.98-1,001,356.52-398,938.80

Finding the Fourth Proportional to 725,611.98, 1,001,356.52 and 398,938.80

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Solution

The fourth proportional to 725,611.98, 1,001,356.52 and 398,938.80 is: 550,542.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    725,611.98 : 1,001,356.52 = 398,938.80 : x
  2. Step 2: Convert to fraction form
    725,611.98/1,001,356.52 = 398,938.80/x
  3. Step 3: Cross multiply
    725,611.98x = 1,001,356.52 × 398,938.80
  4. Step 4: Simplify right side
    725,611.98x = 399,479,968,460.98
  5. Step 5: Solve for x
    x = 399,479,968,460.98/725,611.98
  6. Step 6: Final answer
    x = 550,542.13

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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.