Home / 1,330,889.20-1,996,333.80-905,736.40

Finding the Fourth Proportional to 1,330,889.20, 1,996,333.80 and 905,736.40

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Solution

The fourth proportional to 1,330,889.20, 1,996,333.80 and 905,736.40 is: 1,358,604.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,330,889.20 : 1,996,333.80 = 905,736.40 : x
  2. Step 2: Convert to fraction form
    1,330,889.20/1,996,333.80 = 905,736.40/x
  3. Step 3: Cross multiply
    1,330,889.20x = 1,996,333.80 × 905,736.40
  4. Step 4: Simplify right side
    1,330,889.20x = 1,808,152,189,210.32
  5. Step 5: Solve for x
    x = 1,808,152,189,210.32/1,330,889.20
  6. Step 6: Final answer
    x = 1,358,604.60

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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.