Home / 641,353.36-962,309.14-402,015.78

Finding the Fourth Proportional to 641,353.36, 962,309.14 and 402,015.78

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Solution

The fourth proportional to 641,353.36, 962,309.14 and 402,015.78 is: 603,198.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,353.36 : 962,309.14 = 402,015.78 : x
  2. Step 2: Convert to fraction form
    641,353.36/962,309.14 = 402,015.78/x
  3. Step 3: Cross multiply
    641,353.36x = 962,309.14 × 402,015.78
  4. Step 4: Simplify right side
    641,353.36x = 386,863,459,518.23
  5. Step 5: Solve for x
    x = 386,863,459,518.23/641,353.36
  6. Step 6: Final answer
    x = 603,198.62

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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.