Home / 961,789.90-1,328,399.36-768,865.74

Finding the Fourth Proportional to 961,789.90, 1,328,399.36 and 768,865.74

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Solution

The fourth proportional to 961,789.90, 1,328,399.36 and 768,865.74 is: 1,061,937.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    961,789.90 : 1,328,399.36 = 768,865.74 : x
  2. Step 2: Convert to fraction form
    961,789.90/1,328,399.36 = 768,865.74/x
  3. Step 3: Cross multiply
    961,789.90x = 1,328,399.36 × 768,865.74
  4. Step 4: Simplify right side
    961,789.90x = 1,021,360,756,941.93
  5. Step 5: Solve for x
    x = 1,021,360,756,941.93/961,789.90
  6. Step 6: Final answer
    x = 1,061,937.49

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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.