Home / 642,313.60-886,447.20-355,923.52

Finding the Fourth Proportional to 642,313.60, 886,447.20 and 355,923.52

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Solution

The fourth proportional to 642,313.60, 886,447.20 and 355,923.52 is: 491,204.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,313.60 : 886,447.20 = 355,923.52 : x
  2. Step 2: Convert to fraction form
    642,313.60/886,447.20 = 355,923.52/x
  3. Step 3: Cross multiply
    642,313.60x = 886,447.20 × 355,923.52
  4. Step 4: Simplify right side
    642,313.60x = 315,507,407,718.14
  5. Step 5: Solve for x
    x = 315,507,407,718.14/642,313.60
  6. Step 6: Final answer
    x = 491,204.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.