Home / 921,359.78-1,382,236.47-322,340.48

Finding the Fourth Proportional to 921,359.78, 1,382,236.47 and 322,340.48

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Solution

The fourth proportional to 921,359.78, 1,382,236.47 and 322,340.48 is: 483,579.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    921,359.78 : 1,382,236.47 = 322,340.48 : x
  2. Step 2: Convert to fraction form
    921,359.78/1,382,236.47 = 322,340.48/x
  3. Step 3: Cross multiply
    921,359.78x = 1,382,236.47 × 322,340.48
  4. Step 4: Simplify right side
    921,359.78x = 445,550,767,213.31
  5. Step 5: Solve for x
    x = 445,550,767,213.31/921,359.78
  6. Step 6: Final answer
    x = 483,579.57

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1.5x scale

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.