Home / 656,420.20-983,939.10-256,906.60

Finding the Fourth Proportional to 656,420.20, 983,939.10 and 256,906.60

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Solution

The fourth proportional to 656,420.20, 983,939.10 and 256,906.60 is: 385,089.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,420.20 : 983,939.10 = 256,906.60 : x
  2. Step 2: Convert to fraction form
    656,420.20/983,939.10 = 256,906.60/x
  3. Step 3: Cross multiply
    656,420.20x = 983,939.10 × 256,906.60
  4. Step 4: Simplify right side
    656,420.20x = 252,780,448,788.06
  5. Step 5: Solve for x
    x = 252,780,448,788.06/656,420.20
  6. Step 6: Final answer
    x = 385,089.38

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1.5x scale

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.