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Finding the Fourth Proportional to 557,217.69, 768,986.24 and 315,468.33

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Solution

The fourth proportional to 557,217.69, 768,986.24 and 315,468.33 is: 435,360.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,217.69 : 768,986.24 = 315,468.33 : x
  2. Step 2: Convert to fraction form
    557,217.69/768,986.24 = 315,468.33/x
  3. Step 3: Cross multiply
    557,217.69x = 768,986.24 × 315,468.33
  4. Step 4: Simplify right side
    557,217.69x = 242,590,803,348.44
  5. Step 5: Solve for x
    x = 242,590,803,348.44/557,217.69
  6. Step 6: Final answer
    x = 435,360.91

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1.5x scale

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.