Home / 1,330,292.20-1,995,438.30-905,139.40

Finding the Fourth Proportional to 1,330,292.20, 1,995,438.30 and 905,139.40

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Solution

The fourth proportional to 1,330,292.20, 1,995,438.30 and 905,139.40 is: 1,357,709.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,330,292.20 : 1,995,438.30 = 905,139.40 : x
  2. Step 2: Convert to fraction form
    1,330,292.20/1,995,438.30 = 905,139.40/x
  3. Step 3: Cross multiply
    1,330,292.20x = 1,995,438.30 × 905,139.40
  4. Step 4: Simplify right side
    1,330,292.20x = 1,806,149,825,599.02
  5. Step 5: Solve for x
    x = 1,806,149,825,599.02/1,330,292.20
  6. Step 6: Final answer
    x = 1,357,709.10

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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.