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Finding the Fourth Proportional to 642,108.82, 886,107.95 and 370,175.42

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Solution

The fourth proportional to 642,108.82, 886,107.95 and 370,175.42 is: 510,840.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,108.82 : 886,107.95 = 370,175.42 : x
  2. Step 2: Convert to fraction form
    642,108.82/886,107.95 = 370,175.42/x
  3. Step 3: Cross multiply
    642,108.82x = 886,107.95 × 370,175.42
  4. Step 4: Simplify right side
    642,108.82x = 328,015,377,663.33
  5. Step 5: Solve for x
    x = 328,015,377,663.33/642,108.82
  6. Step 6: Final answer
    x = 510,840.79

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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.