Home / 853,928,956.36-1,280,642,157.96-387,320,434.12

Finding the Fourth Proportional to 853,928,956.36, 1,280,642,157.96 and 387,320,434.12

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Solution

The fourth proportional to 853,928,956.36, 1,280,642,157.96 and 387,320,434.12 is: 580,866,678.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    853,928,956.36 : 1,280,642,157.96 = 387,320,434.12 : x
  2. Step 2: Convert to fraction form
    853,928,956.36/1,280,642,157.96 = 387,320,434.12/x
  3. Step 3: Cross multiply
    853,928,956.36x = 1,280,642,157.96 × 387,320,434.12
  4. Step 4: Simplify right side
    853,928,956.36x = 496,018,876,573,440,832
  5. Step 5: Solve for x
    x = 496,018,876,573,440,832/853,928,956.36
  6. Step 6: Final answer
    x = 580,866,678.52

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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.