Home / 1,400,628.40-2,100,942.60-869,187.40

Finding the Fourth Proportional to 1,400,628.40, 2,100,942.60 and 869,187.40

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Solution

The fourth proportional to 1,400,628.40, 2,100,942.60 and 869,187.40 is: 1,303,781.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,400,628.40 : 2,100,942.60 = 869,187.40 : x
  2. Step 2: Convert to fraction form
    1,400,628.40/2,100,942.60 = 869,187.40/x
  3. Step 3: Cross multiply
    1,400,628.40x = 2,100,942.60 × 869,187.40
  4. Step 4: Simplify right side
    1,400,628.40x = 1,826,112,836,043.24
  5. Step 5: Solve for x
    x = 1,826,112,836,043.24/1,400,628.40
  6. Step 6: Final answer
    x = 1,303,781.10

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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.