Home / 380,723.69-570,683.66-127,764.33

Finding the Fourth Proportional to 380,723.69, 570,683.66 and 127,764.33

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Solution

The fourth proportional to 380,723.69, 570,683.66 and 127,764.33 is: 191,511.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,723.69 : 570,683.66 = 127,764.33 : x
  2. Step 2: Convert to fraction form
    380,723.69/570,683.66 = 127,764.33/x
  3. Step 3: Cross multiply
    380,723.69x = 570,683.66 × 127,764.33
  4. Step 4: Simplify right side
    380,723.69x = 72,913,014,823.03
  5. Step 5: Solve for x
    x = 72,913,014,823.03/380,723.69
  6. Step 6: Final answer
    x = 191,511.63

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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.