Home / 815,110.70-1,222,666.05-394,429.10

Finding the Fourth Proportional to 815,110.70, 1,222,666.05 and 394,429.10

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Solution

The fourth proportional to 815,110.70, 1,222,666.05 and 394,429.10 is: 591,643.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,110.70 : 1,222,666.05 = 394,429.10 : x
  2. Step 2: Convert to fraction form
    815,110.70/1,222,666.05 = 394,429.10/x
  3. Step 3: Cross multiply
    815,110.70x = 1,222,666.05 × 394,429.10
  4. Step 4: Simplify right side
    815,110.70x = 482,255,069,702.06
  5. Step 5: Solve for x
    x = 482,255,069,702.06/815,110.70
  6. Step 6: Final answer
    x = 591,643.65

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1.5x scale

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.