Home / 638,411,022.75-881,007,589.23-356,153,464.52

Finding the Fourth Proportional to 638,411,022.75, 881,007,589.23 and 356,153,464.52

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Solution

The fourth proportional to 638,411,022.75, 881,007,589.23 and 356,153,464.52 is: 491,491,991.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,411,022.75 : 881,007,589.23 = 356,153,464.52 : x
  2. Step 2: Convert to fraction form
    638,411,022.75/881,007,589.23 = 356,153,464.52/x
  3. Step 3: Cross multiply
    638,411,022.75x = 881,007,589.23 × 356,153,464.52
  4. Step 4: Simplify right side
    638,411,022.75x = 313,773,905,172,751,616
  5. Step 5: Solve for x
    x = 313,773,905,172,751,616/638,411,022.75
  6. Step 6: Final answer
    x = 491,491,991.82

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Why These Related Problems?

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