Home / 505,305,768.60-757,958,652.90-431,329,181.40

Finding the Fourth Proportional to 505,305,768.60, 757,958,652.90 and 431,329,181.40

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Solution

The fourth proportional to 505,305,768.60, 757,958,652.90 and 431,329,181.40 is: 646,993,772.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,305,768.60 : 757,958,652.90 = 431,329,181.40 : x
  2. Step 2: Convert to fraction form
    505,305,768.60/757,958,652.90 = 431,329,181.40/x
  3. Step 3: Cross multiply
    505,305,768.60x = 757,958,652.90 × 431,329,181.40
  4. Step 4: Simplify right side
    505,305,768.60x = 326,929,685,290,403,712
  5. Step 5: Solve for x
    x = 326,929,685,290,403,712/505,305,768.60
  6. Step 6: Final answer
    x = 646,993,772.10

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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.