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Finding the Fourth Proportional to 611,817.80, 916,830.30 and 548,637.80

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Solution

The fourth proportional to 611,817.80, 916,830.30 and 548,637.80 is: 822,152.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,817.80 : 916,830.30 = 548,637.80 : x
  2. Step 2: Convert to fraction form
    611,817.80/916,830.30 = 548,637.80/x
  3. Step 3: Cross multiply
    611,817.80x = 916,830.30 × 548,637.80
  4. Step 4: Simplify right side
    611,817.80x = 503,007,758,765.34
  5. Step 5: Solve for x
    x = 503,007,758,765.34/611,817.80
  6. Step 6: Final answer
    x = 822,152.87

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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.