Home / 931,499.76-1,396,080.60-398,394

Finding the Fourth Proportional to 931,499.76, 1,396,080.60 and 398,394

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Solution

The fourth proportional to 931,499.76, 1,396,080.60 and 398,394 is: 597,091.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    931,499.76 : 1,396,080.60 = 398,394 : x
  2. Step 2: Convert to fraction form
    931,499.76/1,396,080.60 = 398,394/x
  3. Step 3: Cross multiply
    931,499.76x = 1,396,080.60 × 398,394
  4. Step 4: Simplify right side
    931,499.76x = 556,190,134,556.40
  5. Step 5: Solve for x
    x = 556,190,134,556.40/931,499.76
  6. Step 6: Final answer
    x = 597,091.01

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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.