Home / 648,022.20-972,179.10-381,645.60

Finding the Fourth Proportional to 648,022.20, 972,179.10 and 381,645.60

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Solution

The fourth proportional to 648,022.20, 972,179.10 and 381,645.60 is: 572,554.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,022.20 : 972,179.10 = 381,645.60 : x
  2. Step 2: Convert to fraction form
    648,022.20/972,179.10 = 381,645.60/x
  3. Step 3: Cross multiply
    648,022.20x = 972,179.10 × 381,645.60
  4. Step 4: Simplify right side
    648,022.20x = 371,027,875,926.96
  5. Step 5: Solve for x
    x = 371,027,875,926.96/648,022.20
  6. Step 6: Final answer
    x = 572,554.27

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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.