Home / 911,138.40-1,366,707.60-280,051.20

Finding the Fourth Proportional to 911,138.40, 1,366,707.60 and 280,051.20

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Solution

The fourth proportional to 911,138.40, 1,366,707.60 and 280,051.20 is: 420,076.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,138.40 : 1,366,707.60 = 280,051.20 : x
  2. Step 2: Convert to fraction form
    911,138.40/1,366,707.60 = 280,051.20/x
  3. Step 3: Cross multiply
    911,138.40x = 1,366,707.60 × 280,051.20
  4. Step 4: Simplify right side
    911,138.40x = 382,748,103,429.12
  5. Step 5: Solve for x
    x = 382,748,103,429.12/911,138.40
  6. Step 6: Final answer
    x = 420,076.80

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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.