Home / 678,314.33-936,084.76-372,418.91

Finding the Fourth Proportional to 678,314.33, 936,084.76 and 372,418.91

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Solution

The fourth proportional to 678,314.33, 936,084.76 and 372,418.91 is: 513,944.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,314.33 : 936,084.76 = 372,418.91 : x
  2. Step 2: Convert to fraction form
    678,314.33/936,084.76 = 372,418.91/x
  3. Step 3: Cross multiply
    678,314.33x = 936,084.76 × 372,418.91
  4. Step 4: Simplify right side
    678,314.33x = 348,615,667,395.98
  5. Step 5: Solve for x
    x = 348,615,667,395.98/678,314.33
  6. Step 6: Final answer
    x = 513,944.13

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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.