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Finding the Fourth Proportional to 611,805.30, 916,811.55 and 548,625.30

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Solution

The fourth proportional to 611,805.30, 916,811.55 and 548,625.30 is: 822,134.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,805.30 : 916,811.55 = 548,625.30 : x
  2. Step 2: Convert to fraction form
    611,805.30/916,811.55 = 548,625.30/x
  3. Step 3: Cross multiply
    611,805.30x = 916,811.55 × 548,625.30
  4. Step 4: Simplify right side
    611,805.30x = 502,986,011,662.22
  5. Step 5: Solve for x
    x = 502,986,011,662.22/611,805.30
  6. Step 6: Final answer
    x = 822,134.12

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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.