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Finding the Fourth Proportional to 620,641.44, 856,486.16 and 352,369.44

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Solution

The fourth proportional to 620,641.44, 856,486.16 and 352,369.44 is: 486,270.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,641.44 : 856,486.16 = 352,369.44 : x
  2. Step 2: Convert to fraction form
    620,641.44/856,486.16 = 352,369.44/x
  3. Step 3: Cross multiply
    620,641.44x = 856,486.16 × 352,369.44
  4. Step 4: Simplify right side
    620,641.44x = 301,799,548,566.95
  5. Step 5: Solve for x
    x = 301,799,548,566.95/620,641.44
  6. Step 6: Final answer
    x = 486,270.38

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1.5x scale

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.