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Finding the Fourth Proportional to 648,435.68, 972,645.12 and 168,620.96

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Solution

The fourth proportional to 648,435.68, 972,645.12 and 168,620.96 is: 252,929.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,435.68 : 972,645.12 = 168,620.96 : x
  2. Step 2: Convert to fraction form
    648,435.68/972,645.12 = 168,620.96/x
  3. Step 3: Cross multiply
    648,435.68x = 972,645.12 × 168,620.96
  4. Step 4: Simplify right side
    648,435.68x = 164,008,353,873.72
  5. Step 5: Solve for x
    x = 164,008,353,873.72/648,435.68
  6. Step 6: Final answer
    x = 252,929.26

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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.