Home / 385,511,181.79-578,321,680.05-119,639,864.65

Finding the Fourth Proportional to 385,511,181.79, 578,321,680.05 and 119,639,864.65

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Solution

The fourth proportional to 385,511,181.79, 578,321,680.05 and 119,639,864.65 is: 179,476,836.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,511,181.79 : 578,321,680.05 = 119,639,864.65 : x
  2. Step 2: Convert to fraction form
    385,511,181.79/578,321,680.05 = 119,639,864.65/x
  3. Step 3: Cross multiply
    385,511,181.79x = 578,321,680.05 × 119,639,864.65
  4. Step 4: Simplify right side
    385,511,181.79x = 69,190,327,525,342,600
  5. Step 5: Solve for x
    x = 69,190,327,525,342,600/385,511,181.79
  6. Step 6: Final answer
    x = 179,476,836.97

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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.