Home / 815,420.20-1,222,692.90-341,570.20

Finding the Fourth Proportional to 815,420.20, 1,222,692.90 and 341,570.20

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Solution

The fourth proportional to 815,420.20, 1,222,692.90 and 341,570.20 is: 512,172.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,420.20 : 1,222,692.90 = 341,570.20 : x
  2. Step 2: Convert to fraction form
    815,420.20/1,222,692.90 = 341,570.20/x
  3. Step 3: Cross multiply
    815,420.20x = 1,222,692.90 × 341,570.20
  4. Step 4: Simplify right side
    815,420.20x = 417,635,458,391.58
  5. Step 5: Solve for x
    x = 417,635,458,391.58/815,420.20
  6. Step 6: Final answer
    x = 512,172.08

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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.