Home / 727,454.62-1,003,918.53-405,164.80

Finding the Fourth Proportional to 727,454.62, 1,003,918.53 and 405,164.80

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Solution

The fourth proportional to 727,454.62, 1,003,918.53 and 405,164.80 is: 559,144.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    727,454.62 : 1,003,918.53 = 405,164.80 : x
  2. Step 2: Convert to fraction form
    727,454.62/1,003,918.53 = 405,164.80/x
  3. Step 3: Cross multiply
    727,454.62x = 1,003,918.53 × 405,164.80
  4. Step 4: Simplify right side
    727,454.62x = 406,752,450,423.74
  5. Step 5: Solve for x
    x = 406,752,450,423.74/727,454.62
  6. Step 6: Final answer
    x = 559,144.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.