Home / 519,556,913.25-779,328,867.04-126,086,998.78

Finding the Fourth Proportional to 519,556,913.25, 779,328,867.04 and 126,086,998.78

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Solution

The fourth proportional to 519,556,913.25, 779,328,867.04 and 126,086,998.78 is: 189,128,920.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,556,913.25 : 779,328,867.04 = 126,086,998.78 : x
  2. Step 2: Convert to fraction form
    519,556,913.25/779,328,867.04 = 126,086,998.78/x
  3. Step 3: Cross multiply
    519,556,913.25x = 779,328,867.04 × 126,086,998.78
  4. Step 4: Simplify right side
    519,556,913.25x = 98,263,237,908,350,208
  5. Step 5: Solve for x
    x = 98,263,237,908,350,208/519,556,913.25
  6. Step 6: Final answer
    x = 189,128,920.05

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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.