Home / 623,783.20-936,112.20-399,688.60

Finding the Fourth Proportional to 623,783.20, 936,112.20 and 399,688.60

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Solution

The fourth proportional to 623,783.20, 936,112.20 and 399,688.60 is: 599,813.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,783.20 : 936,112.20 = 399,688.60 : x
  2. Step 2: Convert to fraction form
    623,783.20/936,112.20 = 399,688.60/x
  3. Step 3: Cross multiply
    623,783.20x = 936,112.20 × 399,688.60
  4. Step 4: Simplify right side
    623,783.20x = 374,153,374,660.92
  5. Step 5: Solve for x
    x = 374,153,374,660.92/623,783.20
  6. Step 6: Final answer
    x = 599,813.16

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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.