Home / 1,288,245.60-1,932,368.40-815,464.80

Finding the Fourth Proportional to 1,288,245.60, 1,932,368.40 and 815,464.80

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Solution

The fourth proportional to 1,288,245.60, 1,932,368.40 and 815,464.80 is: 1,223,197.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,288,245.60 : 1,932,368.40 = 815,464.80 : x
  2. Step 2: Convert to fraction form
    1,288,245.60/1,932,368.40 = 815,464.80/x
  3. Step 3: Cross multiply
    1,288,245.60x = 1,932,368.40 × 815,464.80
  4. Step 4: Simplify right side
    1,288,245.60x = 1,575,778,410,832.32
  5. Step 5: Solve for x
    x = 1,575,778,410,832.32/1,288,245.60
  6. Step 6: Final answer
    x = 1,223,197.20

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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.