Home / 642,185.63-886,216.16-355,724.27

Finding the Fourth Proportional to 642,185.63, 886,216.16 and 355,724.27

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Solution

The fourth proportional to 642,185.63, 886,216.16 and 355,724.27 is: 490,899.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,185.63 : 886,216.16 = 355,724.27 : x
  2. Step 2: Convert to fraction form
    642,185.63/886,216.16 = 355,724.27/x
  3. Step 3: Cross multiply
    642,185.63x = 886,216.16 × 355,724.27
  4. Step 4: Simplify right side
    642,185.63x = 315,248,593,036.43
  5. Step 5: Solve for x
    x = 315,248,593,036.43/642,185.63
  6. Step 6: Final answer
    x = 490,899.49

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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.