Home / 521,993,980.31-782,823,497.83-172,161,394.43

Finding the Fourth Proportional to 521,993,980.31, 782,823,497.83 and 172,161,394.43

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Solution

The fourth proportional to 521,993,980.31, 782,823,497.83 and 172,161,394.43 is: 258,186,856.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,993,980.31 : 782,823,497.83 = 172,161,394.43 : x
  2. Step 2: Convert to fraction form
    521,993,980.31/782,823,497.83 = 172,161,394.43/x
  3. Step 3: Cross multiply
    521,993,980.31x = 782,823,497.83 × 172,161,394.43
  4. Step 4: Simplify right side
    521,993,980.31x = 134,771,984,974,638,368
  5. Step 5: Solve for x
    x = 134,771,984,974,638,368/521,993,980.31
  6. Step 6: Final answer
    x = 258,186,856.67

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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.