Home / 1,500,143.58-2,070,183.54-811,800.72

Finding the Fourth Proportional to 1,500,143.58, 2,070,183.54 and 811,800.72

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Solution

The fourth proportional to 1,500,143.58, 2,070,183.54 and 811,800.72 is: 1,120,277.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,500,143.58 : 2,070,183.54 = 811,800.72 : x
  2. Step 2: Convert to fraction form
    1,500,143.58/2,070,183.54 = 811,800.72/x
  3. Step 3: Cross multiply
    1,500,143.58x = 2,070,183.54 × 811,800.72
  4. Step 4: Simplify right side
    1,500,143.58x = 1,680,576,488,304.15
  5. Step 5: Solve for x
    x = 1,680,576,488,304.15/1,500,143.58
  6. Step 6: Final answer
    x = 1,120,277.09

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.