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Finding the Fourth Proportional to 647,181.28, 970,009.44 and 291,779.20

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Solution

The fourth proportional to 647,181.28, 970,009.44 and 291,779.20 is: 437,325.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,181.28 : 970,009.44 = 291,779.20 : x
  2. Step 2: Convert to fraction form
    647,181.28/970,009.44 = 291,779.20/x
  3. Step 3: Cross multiply
    647,181.28x = 970,009.44 × 291,779.20
  4. Step 4: Simplify right side
    647,181.28x = 283,028,578,395.65
  5. Step 5: Solve for x
    x = 283,028,578,395.65/647,181.28
  6. Step 6: Final answer
    x = 437,325.04

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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.