Home / 679,736.87-938,015.41-373,812.31

Finding the Fourth Proportional to 679,736.87, 938,015.41 and 373,812.31

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Solution

The fourth proportional to 679,736.87, 938,015.41 and 373,812.31 is: 515,849.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,736.87 : 938,015.41 = 373,812.31 : x
  2. Step 2: Convert to fraction form
    679,736.87/938,015.41 = 373,812.31/x
  3. Step 3: Cross multiply
    679,736.87x = 938,015.41 × 373,812.31
  4. Step 4: Simplify right side
    679,736.87x = 350,641,704,407.68
  5. Step 5: Solve for x
    x = 350,641,704,407.68/679,736.87
  6. Step 6: Final answer
    x = 515,849.17

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1.5x scale

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.