Home / 487,831.70-731,747.57-321,580.82

Finding the Fourth Proportional to 487,831.70, 731,747.57 and 321,580.82

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Solution

The fourth proportional to 487,831.70, 731,747.57 and 321,580.82 is: 482,371.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,831.70 : 731,747.57 = 321,580.82 : x
  2. Step 2: Convert to fraction form
    487,831.70/731,747.57 = 321,580.82/x
  3. Step 3: Cross multiply
    487,831.70x = 731,747.57 × 321,580.82
  4. Step 4: Simplify right side
    487,831.70x = 235,315,983,815.07
  5. Step 5: Solve for x
    x = 235,315,983,815.07/487,831.70
  6. Step 6: Final answer
    x = 482,371.24

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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.