Home / 1,420,500.24-1,960,215.39-775,911.15

Finding the Fourth Proportional to 1,420,500.24, 1,960,215.39 and 775,911.15

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Solution

The fourth proportional to 1,420,500.24, 1,960,215.39 and 775,911.15 is: 1,070,716.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,420,500.24 : 1,960,215.39 = 775,911.15 : x
  2. Step 2: Convert to fraction form
    1,420,500.24/1,960,215.39 = 775,911.15/x
  3. Step 3: Cross multiply
    1,420,500.24x = 1,960,215.39 × 775,911.15
  4. Step 4: Simplify right side
    1,420,500.24x = 1,520,952,977,502.60
  5. Step 5: Solve for x
    x = 1,520,952,977,502.60/1,420,500.24
  6. Step 6: Final answer
    x = 1,070,716.45

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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.