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Finding the Fourth Proportional to 678,759.90, 936,647.22 and 372,776.70

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Solution

The fourth proportional to 678,759.90, 936,647.22 and 372,776.70 is: 514,409.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,759.90 : 936,647.22 = 372,776.70 : x
  2. Step 2: Convert to fraction form
    678,759.90/936,647.22 = 372,776.70/x
  3. Step 3: Cross multiply
    678,759.90x = 936,647.22 × 372,776.70
  4. Step 4: Simplify right side
    678,759.90x = 349,160,259,735.77
  5. Step 5: Solve for x
    x = 349,160,259,735.77/678,759.90
  6. Step 6: Final answer
    x = 514,409.09

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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.