Home / 487,825.71-731,738.55-321,574.83

Finding the Fourth Proportional to 487,825.71, 731,738.55 and 321,574.83

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Solution

The fourth proportional to 487,825.71, 731,738.55 and 321,574.83 is: 482,362.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,825.71 : 731,738.55 = 321,574.83 : x
  2. Step 2: Convert to fraction form
    487,825.71/731,738.55 = 321,574.83/x
  3. Step 3: Cross multiply
    487,825.71x = 731,738.55 × 321,574.83
  4. Step 4: Simplify right side
    487,825.71x = 235,308,699,820.70
  5. Step 5: Solve for x
    x = 235,308,699,820.70/487,825.71
  6. Step 6: Final answer
    x = 482,362.24

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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.