Home / 678,433.73-936,172.22-391,947.66

Finding the Fourth Proportional to 678,433.73, 936,172.22 and 391,947.66

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Solution

The fourth proportional to 678,433.73, 936,172.22 and 391,947.66 is: 540,849.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,433.73 : 936,172.22 = 391,947.66 : x
  2. Step 2: Convert to fraction form
    678,433.73/936,172.22 = 391,947.66/x
  3. Step 3: Cross multiply
    678,433.73x = 936,172.22 × 391,947.66
  4. Step 4: Simplify right side
    678,433.73x = 366,930,509,026.27
  5. Step 5: Solve for x
    x = 366,930,509,026.27/678,433.73
  6. Step 6: Final answer
    x = 540,849.45

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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.