Home / 1,420,402.74-1,960,142.88-775,822.80

Finding the Fourth Proportional to 1,420,402.74, 1,960,142.88 and 775,822.80

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Solution

The fourth proportional to 1,420,402.74, 1,960,142.88 and 775,822.80 is: 1,070,628.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,420,402.74 : 1,960,142.88 = 775,822.80 : x
  2. Step 2: Convert to fraction form
    1,420,402.74/1,960,142.88 = 775,822.80/x
  3. Step 3: Cross multiply
    1,420,402.74x = 1,960,142.88 × 775,822.80
  4. Step 4: Simplify right side
    1,420,402.74x = 1,520,723,537,561.66
  5. Step 5: Solve for x
    x = 1,520,723,537,561.66/1,420,402.74
  6. Step 6: Final answer
    x = 1,070,628.42

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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.