Home / 465,621.63-642,790.36-304,722.44

Finding the Fourth Proportional to 465,621.63, 642,790.36 and 304,722.44

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Solution

The fourth proportional to 465,621.63, 642,790.36 and 304,722.44 is: 420,669.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    465,621.63 : 642,790.36 = 304,722.44 : x
  2. Step 2: Convert to fraction form
    465,621.63/642,790.36 = 304,722.44/x
  3. Step 3: Cross multiply
    465,621.63x = 642,790.36 × 304,722.44
  4. Step 4: Simplify right side
    465,621.63x = 195,872,646,485.09
  5. Step 5: Solve for x
    x = 195,872,646,485.09/465,621.63
  6. Step 6: Final answer
    x = 420,669.13

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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.