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Finding the Fourth Proportional to 2,696,978.20, 4,045,467.30 and 1,631,471.80

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Solution

The fourth proportional to 2,696,978.20, 4,045,467.30 and 1,631,471.80 is: 2,447,207.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,696,978.20 : 4,045,467.30 = 1,631,471.80 : x
  2. Step 2: Convert to fraction form
    2,696,978.20/4,045,467.30 = 1,631,471.80/x
  3. Step 3: Cross multiply
    2,696,978.20x = 4,045,467.30 × 1,631,471.80
  4. Step 4: Simplify right side
    2,696,978.20x = 6,600,065,817,772.14
  5. Step 5: Solve for x
    x = 6,600,065,817,772.14/2,696,978.20
  6. Step 6: Final answer
    x = 2,447,207.70

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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.