Home / 742,089.72-1,113,181.32-209,651.76

Finding the Fourth Proportional to 742,089.72, 1,113,181.32 and 209,651.76

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Solution

The fourth proportional to 742,089.72, 1,113,181.32 and 209,651.76 is: 314,490.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    742,089.72 : 1,113,181.32 = 209,651.76 : x
  2. Step 2: Convert to fraction form
    742,089.72/1,113,181.32 = 209,651.76/x
  3. Step 3: Cross multiply
    742,089.72x = 1,113,181.32 × 209,651.76
  4. Step 4: Simplify right side
    742,089.72x = 233,380,422,937.12
  5. Step 5: Solve for x
    x = 233,380,422,937.12/742,089.72
  6. Step 6: Final answer
    x = 314,490.84

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1.5x scale

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.