Home / 1,383,516.50-1,909,281.93-779,904.50

Finding the Fourth Proportional to 1,383,516.50, 1,909,281.93 and 779,904.50

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Solution

The fourth proportional to 1,383,516.50, 1,909,281.93 and 779,904.50 is: 1,076,284.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,383,516.50 : 1,909,281.93 = 779,904.50 : x
  2. Step 2: Convert to fraction form
    1,383,516.50/1,909,281.93 = 779,904.50/x
  3. Step 3: Cross multiply
    1,383,516.50x = 1,909,281.93 × 779,904.50
  4. Step 4: Simplify right side
    1,383,516.50x = 1,489,057,568,975.69
  5. Step 5: Solve for x
    x = 1,489,057,568,975.69/1,383,516.50
  6. Step 6: Final answer
    x = 1,076,284.65

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.