Home / 1,999,288.40-2,756,148.39-1,425,332.12

Finding the Fourth Proportional to 1,999,288.40, 2,756,148.39 and 1,425,332.12

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Solution

The fourth proportional to 1,999,288.40, 2,756,148.39 and 1,425,332.12 is: 1,964,912.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,999,288.40 : 2,756,148.39 = 1,425,332.12 : x
  2. Step 2: Convert to fraction form
    1,999,288.40/2,756,148.39 = 1,425,332.12/x
  3. Step 3: Cross multiply
    1,999,288.40x = 2,756,148.39 × 1,425,332.12
  4. Step 4: Simplify right side
    1,999,288.40x = 3,928,426,813,972.55
  5. Step 5: Solve for x
    x = 3,928,426,813,972.55/1,999,288.40
  6. Step 6: Final answer
    x = 1,964,912.53

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.