Home / 813,546.43-1,220,331.95-307,971.66

Finding the Fourth Proportional to 813,546.43, 1,220,331.95 and 307,971.66

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Solution

The fourth proportional to 813,546.43, 1,220,331.95 and 307,971.66 is: 461,962.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,546.43 : 1,220,331.95 = 307,971.66 : x
  2. Step 2: Convert to fraction form
    813,546.43/1,220,331.95 = 307,971.66/x
  3. Step 3: Cross multiply
    813,546.43x = 1,220,331.95 × 307,971.66
  4. Step 4: Simplify right side
    813,546.43x = 375,827,660,583.82
  5. Step 5: Solve for x
    x = 375,827,660,583.82/813,546.43
  6. Step 6: Final answer
    x = 461,962.15

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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.