Home / 709,895.05-979,647.74-387,604.15

Finding the Fourth Proportional to 709,895.05, 979,647.74 and 387,604.15

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Solution

The fourth proportional to 709,895.05, 979,647.74 and 387,604.15 is: 534,889.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,895.05 : 979,647.74 = 387,604.15 : x
  2. Step 2: Convert to fraction form
    709,895.05/979,647.74 = 387,604.15/x
  3. Step 3: Cross multiply
    709,895.05x = 979,647.74 × 387,604.15
  4. Step 4: Simplify right side
    709,895.05x = 379,715,522,725.86
  5. Step 5: Solve for x
    x = 379,715,522,725.86/709,895.05
  6. Step 6: Final answer
    x = 534,889.66

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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.