Home / 456,100.20-684,344.70-287,749.80

Finding the Fourth Proportional to 456,100.20, 684,344.70 and 287,749.80

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Solution

The fourth proportional to 456,100.20, 684,344.70 and 287,749.80 is: 431,747.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    456,100.20 : 684,344.70 = 287,749.80 : x
  2. Step 2: Convert to fraction form
    456,100.20/684,344.70 = 287,749.80/x
  3. Step 3: Cross multiply
    456,100.20x = 684,344.70 × 287,749.80
  4. Step 4: Simplify right side
    456,100.20x = 196,920,050,556.06
  5. Step 5: Solve for x
    x = 196,920,050,556.06/456,100.20
  6. Step 6: Final answer
    x = 431,747.35

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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.