Home / 1,077,286.32-1,615,926.78-319,186.80

Finding the Fourth Proportional to 1,077,286.32, 1,615,926.78 and 319,186.80

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Solution

The fourth proportional to 1,077,286.32, 1,615,926.78 and 319,186.80 is: 478,779.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,077,286.32 : 1,615,926.78 = 319,186.80 : x
  2. Step 2: Convert to fraction form
    1,077,286.32/1,615,926.78 = 319,186.80/x
  3. Step 3: Cross multiply
    1,077,286.32x = 1,615,926.78 × 319,186.80
  4. Step 4: Simplify right side
    1,077,286.32x = 515,782,497,942.50
  5. Step 5: Solve for x
    x = 515,782,497,942.50/1,077,286.32
  6. Step 6: Final answer
    x = 478,779.40

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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.