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Finding the Fourth Proportional to 611,892.30, 916,942.05 and 548,712.30

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Solution

The fourth proportional to 611,892.30, 916,942.05 and 548,712.30 is: 822,264.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,892.30 : 916,942.05 = 548,712.30 : x
  2. Step 2: Convert to fraction form
    611,892.30/916,942.05 = 548,712.30/x
  3. Step 3: Cross multiply
    611,892.30x = 916,942.05 × 548,712.30
  4. Step 4: Simplify right side
    611,892.30x = 503,137,381,222.22
  5. Step 5: Solve for x
    x = 503,137,381,222.22/611,892.30
  6. Step 6: Final answer
    x = 822,264.61

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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.