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Finding the Fourth Proportional to 1,807,981.62, 2,711,884.78 and 670,965.48

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Solution

The fourth proportional to 1,807,981.62, 2,711,884.78 and 670,965.48 is: 1,006,415.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,807,981.62 : 2,711,884.78 = 670,965.48 : x
  2. Step 2: Convert to fraction form
    1,807,981.62/2,711,884.78 = 670,965.48/x
  3. Step 3: Cross multiply
    1,807,981.62x = 2,711,884.78 × 670,965.48
  4. Step 4: Simplify right side
    1,807,981.62x = 1,819,581,073,117.39
  5. Step 5: Solve for x
    x = 1,819,581,073,117.39/1,807,981.62
  6. Step 6: Final answer
    x = 1,006,415.69

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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.