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Finding the Fourth Proportional to 887,777, 1,225,162.50 and 485,394.92

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Solution

The fourth proportional to 887,777, 1,225,162.50 and 485,394.92 is: 669,861.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    887,777 : 1,225,162.50 = 485,394.92 : x
  2. Step 2: Convert to fraction form
    887,777/1,225,162.50 = 485,394.92/x
  3. Step 3: Cross multiply
    887,777x = 1,225,162.50 × 485,394.92
  4. Step 4: Simplify right side
    887,777x = 594,687,653,674.50
  5. Step 5: Solve for x
    x = 594,687,653,674.50/887,777
  6. Step 6: Final answer
    x = 669,861.52

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.