Home / 1,420,565.68-1,960,307.53-775,861.34

Finding the Fourth Proportional to 1,420,565.68, 1,960,307.53 and 775,861.34

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Solution

The fourth proportional to 1,420,565.68, 1,960,307.53 and 775,861.34 is: 1,070,648.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,420,565.68 : 1,960,307.53 = 775,861.34 : x
  2. Step 2: Convert to fraction form
    1,420,565.68/1,960,307.53 = 775,861.34/x
  3. Step 3: Cross multiply
    1,420,565.68x = 1,960,307.53 × 775,861.34
  4. Step 4: Simplify right side
    1,420,565.68x = 1,520,926,815,296.70
  5. Step 5: Solve for x
    x = 1,520,926,815,296.70/1,420,565.68
  6. Step 6: Final answer
    x = 1,070,648.71

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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.