Home / 521,391.03-782,382.41-281,501.74

Finding the Fourth Proportional to 521,391.03, 782,382.41 and 281,501.74

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Solution

The fourth proportional to 521,391.03, 782,382.41 and 281,501.74 is: 422,412.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,391.03 : 782,382.41 = 281,501.74 : x
  2. Step 2: Convert to fraction form
    521,391.03/782,382.41 = 281,501.74/x
  3. Step 3: Cross multiply
    521,391.03x = 782,382.41 × 281,501.74
  4. Step 4: Simplify right side
    521,391.03x = 220,242,009,760.39
  5. Step 5: Solve for x
    x = 220,242,009,760.39/521,391.03
  6. Step 6: Final answer
    x = 422,412.35

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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.