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Finding the Fourth Proportional to 655,243.89, 904,515.57 and 440,508.50

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Solution

The fourth proportional to 655,243.89, 904,515.57 and 440,508.50 is: 608,089.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,243.89 : 904,515.57 = 440,508.50 : x
  2. Step 2: Convert to fraction form
    655,243.89/904,515.57 = 440,508.50/x
  3. Step 3: Cross multiply
    655,243.89x = 904,515.57 × 440,508.50
  4. Step 4: Simplify right side
    655,243.89x = 398,446,796,967.35
  5. Step 5: Solve for x
    x = 398,446,796,967.35/655,243.89
  6. Step 6: Final answer
    x = 608,089.30

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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.