Home / 623,782.20-936,110.70-399,687.60

Finding the Fourth Proportional to 623,782.20, 936,110.70 and 399,687.60

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Solution

The fourth proportional to 623,782.20, 936,110.70 and 399,687.60 is: 599,811.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,782.20 : 936,110.70 = 399,687.60 : x
  2. Step 2: Convert to fraction form
    623,782.20/936,110.70 = 399,687.60/x
  3. Step 3: Cross multiply
    623,782.20x = 936,110.70 × 399,687.60
  4. Step 4: Simplify right side
    623,782.20x = 374,151,839,017.32
  5. Step 5: Solve for x
    x = 374,151,839,017.32/623,782.20
  6. Step 6: Final answer
    x = 599,811.66

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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.