Home / 1,500,107.82-2,070,154.26-811,779.60

Finding the Fourth Proportional to 1,500,107.82, 2,070,154.26 and 811,779.60

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Solution

The fourth proportional to 1,500,107.82, 2,070,154.26 and 811,779.60 is: 1,120,258.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,500,107.82 : 2,070,154.26 = 811,779.60 : x
  2. Step 2: Convert to fraction form
    1,500,107.82/2,070,154.26 = 811,779.60/x
  3. Step 3: Cross multiply
    1,500,107.82x = 2,070,154.26 × 811,779.60
  4. Step 4: Simplify right side
    1,500,107.82x = 1,680,508,997,121.10
  5. Step 5: Solve for x
    x = 1,680,508,997,121.10/1,500,107.82
  6. Step 6: Final answer
    x = 1,120,258.81

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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.