Home / 678,934.16-936,958.76-377,128.16

Finding the Fourth Proportional to 678,934.16, 936,958.76 and 377,128.16

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Solution

The fourth proportional to 678,934.16, 936,958.76 and 377,128.16 is: 520,453.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,934.16 : 936,958.76 = 377,128.16 : x
  2. Step 2: Convert to fraction form
    678,934.16/936,958.76 = 377,128.16/x
  3. Step 3: Cross multiply
    678,934.16x = 936,958.76 × 377,128.16
  4. Step 4: Simplify right side
    678,934.16x = 353,353,533,154.68
  5. Step 5: Solve for x
    x = 353,353,533,154.68/678,934.16
  6. Step 6: Final answer
    x = 520,453.31

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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.