Home / 487,786.05-731,569.73-320,480.55

Finding the Fourth Proportional to 487,786.05, 731,569.73 and 320,480.55

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Solution

The fourth proportional to 487,786.05, 731,569.73 and 320,480.55 is: 480,648.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,786.05 : 731,569.73 = 320,480.55 : x
  2. Step 2: Convert to fraction form
    487,786.05/731,569.73 = 320,480.55/x
  3. Step 3: Cross multiply
    487,786.05x = 731,569.73 × 320,480.55
  4. Step 4: Simplify right side
    487,786.05x = 234,453,867,831.35
  5. Step 5: Solve for x
    x = 234,453,867,831.35/487,786.05
  6. Step 6: Final answer
    x = 480,648.98

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1.5x scale

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.