Home / 717,749.91-990,512.55-442,003.43

Finding the Fourth Proportional to 717,749.91, 990,512.55 and 442,003.43

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Solution

The fourth proportional to 717,749.91, 990,512.55 and 442,003.43 is: 609,975.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,749.91 : 990,512.55 = 442,003.43 : x
  2. Step 2: Convert to fraction form
    717,749.91/990,512.55 = 442,003.43/x
  3. Step 3: Cross multiply
    717,749.91x = 990,512.55 × 442,003.43
  4. Step 4: Simplify right side
    717,749.91x = 437,809,947,034.33
  5. Step 5: Solve for x
    x = 437,809,947,034.33/717,749.91
  6. Step 6: Final answer
    x = 609,975.62

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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.