Home / 678,897.12-936,907.68-377,091.12

Finding the Fourth Proportional to 678,897.12, 936,907.68 and 377,091.12

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Solution

The fourth proportional to 678,897.12, 936,907.68 and 377,091.12 is: 520,402.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,897.12 : 936,907.68 = 377,091.12 : x
  2. Step 2: Convert to fraction form
    678,897.12/936,907.68 = 377,091.12/x
  3. Step 3: Cross multiply
    678,897.12x = 936,907.68 × 377,091.12
  4. Step 4: Simplify right side
    678,897.12x = 353,299,566,387.80
  5. Step 5: Solve for x
    x = 353,299,566,387.80/678,897.12
  6. Step 6: Final answer
    x = 520,402.22

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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.