Home / 1,330,890.40-1,996,335.60-905,737.60

Finding the Fourth Proportional to 1,330,890.40, 1,996,335.60 and 905,737.60

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Solution

The fourth proportional to 1,330,890.40, 1,996,335.60 and 905,737.60 is: 1,358,606.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,330,890.40 : 1,996,335.60 = 905,737.60 : x
  2. Step 2: Convert to fraction form
    1,330,890.40/1,996,335.60 = 905,737.60/x
  3. Step 3: Cross multiply
    1,330,890.40x = 1,996,335.60 × 905,737.60
  4. Step 4: Simplify right side
    1,330,890.40x = 1,808,156,215,138.56
  5. Step 5: Solve for x
    x = 1,808,156,215,138.56/1,330,890.40
  6. Step 6: Final answer
    x = 1,358,606.40

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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.