Home / 725,270.87-1,087,648.88-212,792.98

Finding the Fourth Proportional to 725,270.87, 1,087,648.88 and 212,792.98

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Solution

The fourth proportional to 725,270.87, 1,087,648.88 and 212,792.98 is: 319,113.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    725,270.87 : 1,087,648.88 = 212,792.98 : x
  2. Step 2: Convert to fraction form
    725,270.87/1,087,648.88 = 212,792.98/x
  3. Step 3: Cross multiply
    725,270.87x = 1,087,648.88 × 212,792.98
  4. Step 4: Simplify right side
    725,270.87x = 231,444,046,368.86
  5. Step 5: Solve for x
    x = 231,444,046,368.86/725,270.87
  6. Step 6: Final answer
    x = 319,113.94

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.