Home / 772,135.20-1,157,662.80-456,429.60

Finding the Fourth Proportional to 772,135.20, 1,157,662.80 and 456,429.60

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Solution

The fourth proportional to 772,135.20, 1,157,662.80 and 456,429.60 is: 684,325.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    772,135.20 : 1,157,662.80 = 456,429.60 : x
  2. Step 2: Convert to fraction form
    772,135.20/1,157,662.80 = 456,429.60/x
  3. Step 3: Cross multiply
    772,135.20x = 1,157,662.80 × 456,429.60
  4. Step 4: Simplify right side
    772,135.20x = 528,391,568,738.88
  5. Step 5: Solve for x
    x = 528,391,568,738.88/772,135.20
  6. Step 6: Final answer
    x = 684,325.19

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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.