Home / 872,540.78-1,308,801.36-340,435.46

Finding the Fourth Proportional to 872,540.78, 1,308,801.36 and 340,435.46

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Solution

The fourth proportional to 872,540.78, 1,308,801.36 and 340,435.46 is: 510,649.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    872,540.78 : 1,308,801.36 = 340,435.46 : x
  2. Step 2: Convert to fraction form
    872,540.78/1,308,801.36 = 340,435.46/x
  3. Step 3: Cross multiply
    872,540.78x = 1,308,801.36 × 340,435.46
  4. Step 4: Simplify right side
    872,540.78x = 445,562,393,040.23
  5. Step 5: Solve for x
    x = 445,562,393,040.23/872,540.78
  6. Step 6: Final answer
    x = 510,649.37

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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.