Home / 782,319.96-1,079,564.22-480,455.64

Finding the Fourth Proportional to 782,319.96, 1,079,564.22 and 480,455.64

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Solution

The fourth proportional to 782,319.96, 1,079,564.22 and 480,455.64 is: 663,005.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    782,319.96 : 1,079,564.22 = 480,455.64 : x
  2. Step 2: Convert to fraction form
    782,319.96/1,079,564.22 = 480,455.64/x
  3. Step 3: Cross multiply
    782,319.96x = 1,079,564.22 × 480,455.64
  4. Step 4: Simplify right side
    782,319.96x = 518,682,718,241.20
  5. Step 5: Solve for x
    x = 518,682,718,241.20/782,319.96
  6. Step 6: Final answer
    x = 663,005.86

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1.5x scale

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.