Home / 505,320,420.15-757,980,630.23-308,899,826.55

Finding the Fourth Proportional to 505,320,420.15, 757,980,630.23 and 308,899,826.55

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Solution

The fourth proportional to 505,320,420.15, 757,980,630.23 and 308,899,826.55 is: 463,349,739.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,320,420.15 : 757,980,630.23 = 308,899,826.55 : x
  2. Step 2: Convert to fraction form
    505,320,420.15/757,980,630.23 = 308,899,826.55/x
  3. Step 3: Cross multiply
    505,320,420.15x = 757,980,630.23 × 308,899,826.55
  4. Step 4: Simplify right side
    505,320,420.15x = 234,140,085,204,762,208
  5. Step 5: Solve for x
    x = 234,140,085,204,762,208/505,320,420.15
  6. Step 6: Final answer
    x = 463,349,739.83

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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.