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Finding the Fourth Proportional to 1,926,845.40, 2,890,314.98 and 647,471.41

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Solution

The fourth proportional to 1,926,845.40, 2,890,314.98 and 647,471.41 is: 971,222.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,926,845.40 : 2,890,314.98 = 647,471.41 : x
  2. Step 2: Convert to fraction form
    1,926,845.40/2,890,314.98 = 647,471.41/x
  3. Step 3: Cross multiply
    1,926,845.40x = 2,890,314.98 × 647,471.41
  4. Step 4: Simplify right side
    1,926,845.40x = 1,871,396,311,051.62
  5. Step 5: Solve for x
    x = 1,871,396,311,051.62/1,926,845.40
  6. Step 6: Final answer
    x = 971,222.87

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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.