Home / 2,128,914.40-3,194,246.40-781,722.40

Finding the Fourth Proportional to 2,128,914.40, 3,194,246.40 and 781,722.40

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Solution

The fourth proportional to 2,128,914.40, 3,194,246.40 and 781,722.40 is: 1,172,904.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,128,914.40 : 3,194,246.40 = 781,722.40 : x
  2. Step 2: Convert to fraction form
    2,128,914.40/3,194,246.40 = 781,722.40/x
  3. Step 3: Cross multiply
    2,128,914.40x = 3,194,246.40 × 781,722.40
  4. Step 4: Simplify right side
    2,128,914.40x = 2,497,013,961,999.36
  5. Step 5: Solve for x
    x = 2,497,013,961,999.36/2,128,914.40
  6. Step 6: Final answer
    x = 1,172,904.82

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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.