Home / 1,420,489.50-1,960,263.90-775,909.86

Finding the Fourth Proportional to 1,420,489.50, 1,960,263.90 and 775,909.86

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Solution

The fourth proportional to 1,420,489.50, 1,960,263.90 and 775,909.86 is: 1,070,749.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,420,489.50 : 1,960,263.90 = 775,909.86 : x
  2. Step 2: Convert to fraction form
    1,420,489.50/1,960,263.90 = 775,909.86/x
  3. Step 3: Cross multiply
    1,420,489.50x = 1,960,263.90 × 775,909.86
  4. Step 4: Simplify right side
    1,420,489.50x = 1,520,988,088,212.05
  5. Step 5: Solve for x
    x = 1,520,988,088,212.05/1,420,489.50
  6. Step 6: Final answer
    x = 1,070,749.27

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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.