Home / 1,980,112.60-2,969,585.70-781,636.60

Finding the Fourth Proportional to 1,980,112.60, 2,969,585.70 and 781,636.60

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Solution

The fourth proportional to 1,980,112.60, 2,969,585.70 and 781,636.60 is: 1,172,224.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,980,112.60 : 2,969,585.70 = 781,636.60 : x
  2. Step 2: Convert to fraction form
    1,980,112.60/2,969,585.70 = 781,636.60/x
  3. Step 3: Cross multiply
    1,980,112.60x = 2,969,585.70 × 781,636.60
  4. Step 4: Simplify right side
    1,980,112.60x = 2,321,136,869,956.62
  5. Step 5: Solve for x
    x = 2,321,136,869,956.62/1,980,112.60
  6. Step 6: Final answer
    x = 1,172,224.69

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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.