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Finding the Fourth Proportional to 611,669.40, 918,195.30 and 362,491.80

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Solution

The fourth proportional to 611,669.40, 918,195.30 and 362,491.80 is: 544,147.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,669.40 : 918,195.30 = 362,491.80 : x
  2. Step 2: Convert to fraction form
    611,669.40/918,195.30 = 362,491.80/x
  3. Step 3: Cross multiply
    611,669.40x = 918,195.30 × 362,491.80
  4. Step 4: Simplify right side
    611,669.40x = 332,838,267,048.54
  5. Step 5: Solve for x
    x = 332,838,267,048.54/611,669.40
  6. Step 6: Final answer
    x = 544,147.32

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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.