Home / 1,278,661.29-1,918,307.66-380,099.18

Finding the Fourth Proportional to 1,278,661.29, 1,918,307.66 and 380,099.18

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Solution

The fourth proportional to 1,278,661.29, 1,918,307.66 and 380,099.18 is: 570,242.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278,661.29 : 1,918,307.66 = 380,099.18 : x
  2. Step 2: Convert to fraction form
    1,278,661.29/1,918,307.66 = 380,099.18/x
  3. Step 3: Cross multiply
    1,278,661.29x = 1,918,307.66 × 380,099.18
  4. Step 4: Simplify right side
    1,278,661.29x = 729,147,173,587.05
  5. Step 5: Solve for x
    x = 729,147,173,587.05/1,278,661.29
  6. Step 6: Final answer
    x = 570,242.63

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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.