Home / 875,138.40-1,310,083.20-519,969.60

Finding the Fourth Proportional to 875,138.40, 1,310,083.20 and 519,969.60

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Solution

The fourth proportional to 875,138.40, 1,310,083.20 and 519,969.60 is: 778,395.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    875,138.40 : 1,310,083.20 = 519,969.60 : x
  2. Step 2: Convert to fraction form
    875,138.40/1,310,083.20 = 519,969.60/x
  3. Step 3: Cross multiply
    875,138.40x = 1,310,083.20 × 519,969.60
  4. Step 4: Simplify right side
    875,138.40x = 681,203,437,470.72
  5. Step 5: Solve for x
    x = 681,203,437,470.72/875,138.40
  6. Step 6: Final answer
    x = 778,395.09

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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.