Home / 1,181,775.78-1,630,869.93-645,231.78

Finding the Fourth Proportional to 1,181,775.78, 1,630,869.93 and 645,231.78

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Solution

The fourth proportional to 1,181,775.78, 1,630,869.93 and 645,231.78 is: 890,430.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,181,775.78 : 1,630,869.93 = 645,231.78 : x
  2. Step 2: Convert to fraction form
    1,181,775.78/1,630,869.93 = 645,231.78/x
  3. Step 3: Cross multiply
    1,181,775.78x = 1,630,869.93 × 645,231.78
  4. Step 4: Simplify right side
    1,181,775.78x = 1,052,289,107,882.38
  5. Step 5: Solve for x
    x = 1,052,289,107,882.38/1,181,775.78
  6. Step 6: Final answer
    x = 890,430.42

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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.