Home / 808,605.50-1,212,966.60-309,969.50

Finding the Fourth Proportional to 808,605.50, 1,212,966.60 and 309,969.50

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Solution

The fourth proportional to 808,605.50, 1,212,966.60 and 309,969.50 is: 464,976.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,605.50 : 1,212,966.60 = 309,969.50 : x
  2. Step 2: Convert to fraction form
    808,605.50/1,212,966.60 = 309,969.50/x
  3. Step 3: Cross multiply
    808,605.50x = 1,212,966.60 × 309,969.50
  4. Step 4: Simplify right side
    808,605.50x = 375,982,650,518.70
  5. Step 5: Solve for x
    x = 375,982,650,518.70/808,605.50
  6. Step 6: Final answer
    x = 464,976.62

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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.