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Finding the Fourth Proportional to 611,884.88, 844,522.02 and 390,980.96

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Solution

The fourth proportional to 611,884.88, 844,522.02 and 390,980.96 is: 539,630.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,884.88 : 844,522.02 = 390,980.96 : x
  2. Step 2: Convert to fraction form
    611,884.88/844,522.02 = 390,980.96/x
  3. Step 3: Cross multiply
    611,884.88x = 844,522.02 × 390,980.96
  4. Step 4: Simplify right side
    611,884.88x = 330,192,030,120.74
  5. Step 5: Solve for x
    x = 330,192,030,120.74/611,884.88
  6. Step 6: Final answer
    x = 539,630.97

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.