Home / 742,181.78-1,113,317.62-209,742.66

Finding the Fourth Proportional to 742,181.78, 1,113,317.62 and 209,742.66

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Solution

The fourth proportional to 742,181.78, 1,113,317.62 and 209,742.66 is: 314,626.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    742,181.78 : 1,113,317.62 = 209,742.66 : x
  2. Step 2: Convert to fraction form
    742,181.78/1,113,317.62 = 209,742.66/x
  3. Step 3: Cross multiply
    742,181.78x = 1,113,317.62 × 209,742.66
  4. Step 4: Simplify right side
    742,181.78x = 233,510,199,043.67
  5. Step 5: Solve for x
    x = 233,510,199,043.67/742,181.78
  6. Step 6: Final answer
    x = 314,626.69

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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.