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Finding the Fourth Proportional to 611,820.80, 916,834.80 and 548,640.80

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Solution

The fourth proportional to 611,820.80, 916,834.80 and 548,640.80 is: 822,157.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,820.80 : 916,834.80 = 548,640.80 : x
  2. Step 2: Convert to fraction form
    611,820.80/916,834.80 = 548,640.80/x
  3. Step 3: Cross multiply
    611,820.80x = 916,834.80 × 548,640.80
  4. Step 4: Simplify right side
    611,820.80x = 503,012,978,139.84
  5. Step 5: Solve for x
    x = 503,012,978,139.84/611,820.80
  6. Step 6: Final answer
    x = 822,157.37

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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.