Home / 861,197.82-1,291,803.21-328,575.66

Finding the Fourth Proportional to 861,197.82, 1,291,803.21 and 328,575.66

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Solution

The fourth proportional to 861,197.82, 1,291,803.21 and 328,575.66 is: 492,865.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,197.82 : 1,291,803.21 = 328,575.66 : x
  2. Step 2: Convert to fraction form
    861,197.82/1,291,803.21 = 328,575.66/x
  3. Step 3: Cross multiply
    861,197.82x = 1,291,803.21 × 328,575.66
  4. Step 4: Simplify right side
    861,197.82x = 424,455,092,315.87
  5. Step 5: Solve for x
    x = 424,455,092,315.87/861,197.82
  6. Step 6: Final answer
    x = 492,865.96

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Double scale
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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.