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Finding the Fourth Proportional to 1,099,664.10, 1,649,496.15 and 742,745.70

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Solution

The fourth proportional to 1,099,664.10, 1,649,496.15 and 742,745.70 is: 1,114,118.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,099,664.10 : 1,649,496.15 = 742,745.70 : x
  2. Step 2: Convert to fraction form
    1,099,664.10/1,649,496.15 = 742,745.70/x
  3. Step 3: Cross multiply
    1,099,664.10x = 1,649,496.15 × 742,745.70
  4. Step 4: Simplify right side
    1,099,664.10x = 1,225,156,172,579.06
  5. Step 5: Solve for x
    x = 1,225,156,172,579.06/1,099,664.10
  6. Step 6: Final answer
    x = 1,114,118.55

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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.