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Finding the Fourth Proportional to 711,347.60, 981,647.26 and 389,050.62

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Solution

The fourth proportional to 711,347.60, 981,647.26 and 389,050.62 is: 536,883.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,347.60 : 981,647.26 = 389,050.62 : x
  2. Step 2: Convert to fraction form
    711,347.60/981,647.26 = 389,050.62/x
  3. Step 3: Cross multiply
    711,347.60x = 981,647.26 × 389,050.62
  4. Step 4: Simplify right side
    711,347.60x = 381,910,475,124.30
  5. Step 5: Solve for x
    x = 381,910,475,124.30/711,347.60
  6. Step 6: Final answer
    x = 536,883.06

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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.