Home / 659,623.20-989,434.80-410,791.20

Finding the Fourth Proportional to 659,623.20, 989,434.80 and 410,791.20

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Solution

The fourth proportional to 659,623.20, 989,434.80 and 410,791.20 is: 616,186.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,623.20 : 989,434.80 = 410,791.20 : x
  2. Step 2: Convert to fraction form
    659,623.20/989,434.80 = 410,791.20/x
  3. Step 3: Cross multiply
    659,623.20x = 989,434.80 × 410,791.20
  4. Step 4: Simplify right side
    659,623.20x = 406,451,108,813.76
  5. Step 5: Solve for x
    x = 406,451,108,813.76/659,623.20
  6. Step 6: Final answer
    x = 616,186.80

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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.