Home / 638,273.20-957,409.80-389,441.20

Finding the Fourth Proportional to 638,273.20, 957,409.80 and 389,441.20

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Solution

The fourth proportional to 638,273.20, 957,409.80 and 389,441.20 is: 584,161.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,273.20 : 957,409.80 = 389,441.20 : x
  2. Step 2: Convert to fraction form
    638,273.20/957,409.80 = 389,441.20/x
  3. Step 3: Cross multiply
    638,273.20x = 957,409.80 × 389,441.20
  4. Step 4: Simplify right side
    638,273.20x = 372,854,821,403.76
  5. Step 5: Solve for x
    x = 372,854,821,403.76/638,273.20
  6. Step 6: Final answer
    x = 584,161.80

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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.