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Finding the Fourth Proportional to 648,010.80, 971,578.80 and 344,455.20

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Solution

The fourth proportional to 648,010.80, 971,578.80 and 344,455.20 is: 516,450.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,010.80 : 971,578.80 = 344,455.20 : x
  2. Step 2: Convert to fraction form
    648,010.80/971,578.80 = 344,455.20/x
  3. Step 3: Cross multiply
    648,010.80x = 971,578.80 × 344,455.20
  4. Step 4: Simplify right side
    648,010.80x = 334,665,369,869.76
  5. Step 5: Solve for x
    x = 334,665,369,869.76/648,010.80
  6. Step 6: Final answer
    x = 516,450.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.