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Finding the Fourth Proportional to 611,908.80, 916,966.80 and 548,728.80

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Solution

The fourth proportional to 611,908.80, 916,966.80 and 548,728.80 is: 822,289.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,908.80 : 916,966.80 = 548,728.80 : x
  2. Step 2: Convert to fraction form
    611,908.80/916,966.80 = 548,728.80/x
  3. Step 3: Cross multiply
    611,908.80x = 916,966.80 × 548,728.80
  4. Step 4: Simplify right side
    611,908.80x = 503,166,091,803.84
  5. Step 5: Solve for x
    x = 503,166,091,803.84/611,908.80
  6. Step 6: Final answer
    x = 822,289.35

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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.