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Finding the Fourth Proportional to 520,067.55, 780,101.33 and 488,963.55

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Solution

The fourth proportional to 520,067.55, 780,101.33 and 488,963.55 is: 733,445.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,067.55 : 780,101.33 = 488,963.55 : x
  2. Step 2: Convert to fraction form
    520,067.55/780,101.33 = 488,963.55/x
  3. Step 3: Cross multiply
    520,067.55x = 780,101.33 × 488,963.55
  4. Step 4: Simplify right side
    520,067.55x = 381,441,113,231.70
  5. Step 5: Solve for x
    x = 381,441,113,231.70/520,067.55
  6. Step 6: Final answer
    x = 733,445.33

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.