Home / 780,447,387.58-1,077,037,168.72-428,037,408.70

Finding the Fourth Proportional to 780,447,387.58, 1,077,037,168.72 and 428,037,408.70

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Solution

The fourth proportional to 780,447,387.58, 1,077,037,168.72 and 428,037,408.70 is: 590,702,469.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,447,387.58 : 1,077,037,168.72 = 428,037,408.70 : x
  2. Step 2: Convert to fraction form
    780,447,387.58/1,077,037,168.72 = 428,037,408.70/x
  3. Step 3: Cross multiply
    780,447,387.58x = 1,077,037,168.72 × 428,037,408.70
  4. Step 4: Simplify right side
    780,447,387.58x = 461,012,198,772,493,504
  5. Step 5: Solve for x
    x = 461,012,198,772,493,504/780,447,387.58
  6. Step 6: Final answer
    x = 590,702,469.01

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.