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Finding the Fourth Proportional to 655,105.08, 904,537.76 and 644,642.26

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Solution

The fourth proportional to 655,105.08, 904,537.76 and 644,642.26 is: 890,091.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,105.08 : 904,537.76 = 644,642.26 : x
  2. Step 2: Convert to fraction form
    655,105.08/904,537.76 = 644,642.26/x
  3. Step 3: Cross multiply
    655,105.08x = 904,537.76 × 644,642.26
  4. Step 4: Simplify right side
    655,105.08x = 583,103,265,861.74
  5. Step 5: Solve for x
    x = 583,103,265,861.74/655,105.08
  6. Step 6: Final answer
    x = 890,091.20

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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.