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Finding the Fourth Proportional to 696,906.96, 961,377.45 and 455,330.94

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Solution

The fourth proportional to 696,906.96, 961,377.45 and 455,330.94 is: 628,125.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    696,906.96 : 961,377.45 = 455,330.94 : x
  2. Step 2: Convert to fraction form
    696,906.96/961,377.45 = 455,330.94/x
  3. Step 3: Cross multiply
    696,906.96x = 961,377.45 × 455,330.94
  4. Step 4: Simplify right side
    696,906.96x = 437,744,898,003.30
  5. Step 5: Solve for x
    x = 437,744,898,003.30/696,906.96
  6. Step 6: Final answer
    x = 628,125.31

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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.