Home / 709,143.32-1,063,911.86-393,821.68

Finding the Fourth Proportional to 709,143.32, 1,063,911.86 and 393,821.68

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Solution

The fourth proportional to 709,143.32, 1,063,911.86 and 393,821.68 is: 590,841.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,143.32 : 1,063,911.86 = 393,821.68 : x
  2. Step 2: Convert to fraction form
    709,143.32/1,063,911.86 = 393,821.68/x
  3. Step 3: Cross multiply
    709,143.32x = 1,063,911.86 × 393,821.68
  4. Step 4: Simplify right side
    709,143.32x = 418,991,556,077.13
  5. Step 5: Solve for x
    x = 418,991,556,077.13/709,143.32
  6. Step 6: Final answer
    x = 590,841.86

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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.