Home / 715,324.87-1,072,987.69-265,987.35

Finding the Fourth Proportional to 715,324.87, 1,072,987.69 and 265,987.35

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Solution

The fourth proportional to 715,324.87, 1,072,987.69 and 265,987.35 is: 398,981.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,324.87 : 1,072,987.69 = 265,987.35 : x
  2. Step 2: Convert to fraction form
    715,324.87/1,072,987.69 = 265,987.35/x
  3. Step 3: Cross multiply
    715,324.87x = 1,072,987.69 × 265,987.35
  4. Step 4: Simplify right side
    715,324.87x = 285,401,152,245.72
  5. Step 5: Solve for x
    x = 285,401,152,245.72/715,324.87
  6. Step 6: Final answer
    x = 398,981.17

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.