Home / 678,269.07-936,085.68-387,907.56

Finding the Fourth Proportional to 678,269.07, 936,085.68 and 387,907.56

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Solution

The fourth proportional to 678,269.07, 936,085.68 and 387,907.56 is: 535,354.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,269.07 : 936,085.68 = 387,907.56 : x
  2. Step 2: Convert to fraction form
    678,269.07/936,085.68 = 387,907.56/x
  3. Step 3: Cross multiply
    678,269.07x = 936,085.68 × 387,907.56
  4. Step 4: Simplify right side
    678,269.07x = 363,114,712,079.74
  5. Step 5: Solve for x
    x = 363,114,712,079.74/678,269.07
  6. Step 6: Final answer
    x = 535,354.96

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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.