Home / 762,616.80-1,145,237.40-408,322.80

Finding the Fourth Proportional to 762,616.80, 1,145,237.40 and 408,322.80

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Solution

The fourth proportional to 762,616.80, 1,145,237.40 and 408,322.80 is: 613,186.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    762,616.80 : 1,145,237.40 = 408,322.80 : x
  2. Step 2: Convert to fraction form
    762,616.80/1,145,237.40 = 408,322.80/x
  3. Step 3: Cross multiply
    762,616.80x = 1,145,237.40 × 408,322.80
  4. Step 4: Simplify right side
    762,616.80x = 467,626,541,832.72
  5. Step 5: Solve for x
    x = 467,626,541,832.72/762,616.80
  6. Step 6: Final answer
    x = 613,186.78

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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.