Home / 643,373.30-964,075.76-343,896.46

Finding the Fourth Proportional to 643,373.30, 964,075.76 and 343,896.46

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Solution

The fourth proportional to 643,373.30, 964,075.76 and 343,896.46 is: 515,318.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,373.30 : 964,075.76 = 343,896.46 : x
  2. Step 2: Convert to fraction form
    643,373.30/964,075.76 = 343,896.46/x
  3. Step 3: Cross multiply
    643,373.30x = 964,075.76 × 343,896.46
  4. Step 4: Simplify right side
    643,373.30x = 331,542,241,035.81
  5. Step 5: Solve for x
    x = 331,542,241,035.81/643,373.30
  6. Step 6: Final answer
    x = 515,318.62

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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.