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Finding the Fourth Proportional to 1,979,435.40, 2,970,902.70 and 1,696,000.20

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Solution

The fourth proportional to 1,979,435.40, 2,970,902.70 and 1,696,000.20 is: 2,545,499.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,979,435.40 : 2,970,902.70 = 1,696,000.20 : x
  2. Step 2: Convert to fraction form
    1,979,435.40/2,970,902.70 = 1,696,000.20/x
  3. Step 3: Cross multiply
    1,979,435.40x = 2,970,902.70 × 1,696,000.20
  4. Step 4: Simplify right side
    1,979,435.40x = 5,038,651,573,380.54
  5. Step 5: Solve for x
    x = 5,038,651,573,380.54/1,979,435.40
  6. Step 6: Final answer
    x = 2,545,499.37

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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.