Home / 427,780,642.13-641,595,112.71-194,556,725.93

Finding the Fourth Proportional to 427,780,642.13, 641,595,112.71 and 194,556,725.93

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Solution

The fourth proportional to 427,780,642.13, 641,595,112.71 and 194,556,725.93 is: 291,800,591.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,780,642.13 : 641,595,112.71 = 194,556,725.93 : x
  2. Step 2: Convert to fraction form
    427,780,642.13/641,595,112.71 = 194,556,725.93/x
  3. Step 3: Cross multiply
    427,780,642.13x = 641,595,112.71 × 194,556,725.93
  4. Step 4: Simplify right side
    427,780,642.13x = 124,826,644,501,546,944
  5. Step 5: Solve for x
    x = 124,826,644,501,546,944/427,780,642.13
  6. Step 6: Final answer
    x = 291,800,591.72

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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.