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Finding the Fourth Proportional to 711,793.38, 982,274.78 and 389,503.50

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Solution

The fourth proportional to 711,793.38, 982,274.78 and 389,503.50 is: 537,514.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,793.38 : 982,274.78 = 389,503.50 : x
  2. Step 2: Convert to fraction form
    711,793.38/982,274.78 = 389,503.50/x
  3. Step 3: Cross multiply
    711,793.38x = 982,274.78 × 389,503.50
  4. Step 4: Simplify right side
    711,793.38x = 382,599,464,771.73
  5. Step 5: Solve for x
    x = 382,599,464,771.73/711,793.38
  6. Step 6: Final answer
    x = 537,514.78

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1.5x scale

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.