Home / 814,341.87-1,221,315.98-341,381.25

Finding the Fourth Proportional to 814,341.87, 1,221,315.98 and 341,381.25

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Solution

The fourth proportional to 814,341.87, 1,221,315.98 and 341,381.25 is: 511,989.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    814,341.87 : 1,221,315.98 = 341,381.25 : x
  2. Step 2: Convert to fraction form
    814,341.87/1,221,315.98 = 341,381.25/x
  3. Step 3: Cross multiply
    814,341.87x = 1,221,315.98 × 341,381.25
  4. Step 4: Simplify right side
    814,341.87x = 416,934,374,190.47
  5. Step 5: Solve for x
    x = 416,934,374,190.47/814,341.87
  6. Step 6: Final answer
    x = 511,989.36

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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.