Home / 505,320,414.40-757,980,621.60-308,899,820.80

Finding the Fourth Proportional to 505,320,414.40, 757,980,621.60 and 308,899,820.80

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Solution

The fourth proportional to 505,320,414.40, 757,980,621.60 and 308,899,820.80 is: 463,349,731.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,320,414.40 : 757,980,621.60 = 308,899,820.80 : x
  2. Step 2: Convert to fraction form
    505,320,414.40/757,980,621.60 = 308,899,820.80/x
  3. Step 3: Cross multiply
    505,320,414.40x = 757,980,621.60 × 308,899,820.80
  4. Step 4: Simplify right side
    505,320,414.40x = 234,140,078,182,112,640
  5. Step 5: Solve for x
    x = 234,140,078,182,112,640/505,320,414.40
  6. Step 6: Final answer
    x = 463,349,731.20

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Double scale
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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.