Home / 521,428.20-782,156.88-184,421.22

Finding the Fourth Proportional to 521,428.20, 782,156.88 and 184,421.22

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Solution

The fourth proportional to 521,428.20, 782,156.88 and 184,421.22 is: 276,636.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,428.20 : 782,156.88 = 184,421.22 : x
  2. Step 2: Convert to fraction form
    521,428.20/782,156.88 = 184,421.22/x
  3. Step 3: Cross multiply
    521,428.20x = 782,156.88 × 184,421.22
  4. Step 4: Simplify right side
    521,428.20x = 144,246,326,040.99
  5. Step 5: Solve for x
    x = 144,246,326,040.99/521,428.20
  6. Step 6: Final answer
    x = 276,636.99

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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.