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Finding the Fourth Proportional to 576,003.10, 864,004.65 and 520,015.90

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Solution

The fourth proportional to 576,003.10, 864,004.65 and 520,015.90 is: 780,023.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,003.10 : 864,004.65 = 520,015.90 : x
  2. Step 2: Convert to fraction form
    576,003.10/864,004.65 = 520,015.90/x
  3. Step 3: Cross multiply
    576,003.10x = 864,004.65 × 520,015.90
  4. Step 4: Simplify right side
    576,003.10x = 449,296,155,673.94
  5. Step 5: Solve for x
    x = 449,296,155,673.94/576,003.10
  6. Step 6: Final answer
    x = 780,023.85

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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.