Home / 765,879.21-1,148,820.26-316,106.73

Finding the Fourth Proportional to 765,879.21, 1,148,820.26 and 316,106.73

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Solution

The fourth proportional to 765,879.21, 1,148,820.26 and 316,106.73 is: 474,160.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    765,879.21 : 1,148,820.26 = 316,106.73 : x
  2. Step 2: Convert to fraction form
    765,879.21/1,148,820.26 = 316,106.73/x
  3. Step 3: Cross multiply
    765,879.21x = 1,148,820.26 × 316,106.73
  4. Step 4: Simplify right side
    765,879.21x = 363,149,814,165.82
  5. Step 5: Solve for x
    x = 363,149,814,165.82/765,879.21
  6. Step 6: Final answer
    x = 474,160.69

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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.