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Finding the Fourth Proportional to 620,892, 856,832.04 and 352,620

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Solution

The fourth proportional to 620,892, 856,832.04 and 352,620 is: 486,616.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,892 : 856,832.04 = 352,620 : x
  2. Step 2: Convert to fraction form
    620,892/856,832.04 = 352,620/x
  3. Step 3: Cross multiply
    620,892x = 856,832.04 × 352,620
  4. Step 4: Simplify right side
    620,892x = 302,136,113,944.80
  5. Step 5: Solve for x
    x = 302,136,113,944.80/620,892
  6. Step 6: Final answer
    x = 486,616.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.