Home / 727,403.60-1,003,816.97-405,113.70

Finding the Fourth Proportional to 727,403.60, 1,003,816.97 and 405,113.70

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Solution

The fourth proportional to 727,403.60, 1,003,816.97 and 405,113.70 is: 559,056.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    727,403.60 : 1,003,816.97 = 405,113.70 : x
  2. Step 2: Convert to fraction form
    727,403.60/1,003,816.97 = 405,113.70/x
  3. Step 3: Cross multiply
    727,403.60x = 1,003,816.97 × 405,113.70
  4. Step 4: Simplify right side
    727,403.60x = 406,660,006,839.49
  5. Step 5: Solve for x
    x = 406,660,006,839.49/727,403.60
  6. Step 6: Final answer
    x = 559,056.91

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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.