Home / 505,305,087.60-757,957,631.40-431,328,500.40

Finding the Fourth Proportional to 505,305,087.60, 757,957,631.40 and 431,328,500.40

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Solution

The fourth proportional to 505,305,087.60, 757,957,631.40 and 431,328,500.40 is: 646,992,750.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,305,087.60 : 757,957,631.40 = 431,328,500.40 : x
  2. Step 2: Convert to fraction form
    505,305,087.60/757,957,631.40 = 431,328,500.40/x
  3. Step 3: Cross multiply
    505,305,087.60x = 757,957,631.40 × 431,328,500.40
  4. Step 4: Simplify right side
    505,305,087.60x = 326,928,728,518,497,920
  5. Step 5: Solve for x
    x = 326,928,728,518,497,920/505,305,087.60
  6. Step 6: Final answer
    x = 646,992,750.60

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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.