Home / 1,260,256.92-1,890,631.44-407,540.40

Finding the Fourth Proportional to 1,260,256.92, 1,890,631.44 and 407,540.40

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Solution

The fourth proportional to 1,260,256.92, 1,890,631.44 and 407,540.40 is: 611,390.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,260,256.92 : 1,890,631.44 = 407,540.40 : x
  2. Step 2: Convert to fraction form
    1,260,256.92/1,890,631.44 = 407,540.40/x
  3. Step 3: Cross multiply
    1,260,256.92x = 1,890,631.44 × 407,540.40
  4. Step 4: Simplify right side
    1,260,256.92x = 770,508,693,310.18
  5. Step 5: Solve for x
    x = 770,508,693,310.18/1,260,256.92
  6. Step 6: Final answer
    x = 611,390.17

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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.