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Finding the Fourth Proportional to 611,695.80, 914,951.70 and 548,969.40

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Solution

The fourth proportional to 611,695.80, 914,951.70 and 548,969.40 is: 821,127.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,695.80 : 914,951.70 = 548,969.40 : x
  2. Step 2: Convert to fraction form
    611,695.80/914,951.70 = 548,969.40/x
  3. Step 3: Cross multiply
    611,695.80x = 914,951.70 × 548,969.40
  4. Step 4: Simplify right side
    611,695.80x = 502,280,485,777.98
  5. Step 5: Solve for x
    x = 502,280,485,777.98/611,695.80
  6. Step 6: Final answer
    x = 821,127.90

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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.