Home / 642,619.09-886,824.08-352,228.42

Finding the Fourth Proportional to 642,619.09, 886,824.08 and 352,228.42

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Solution

The fourth proportional to 642,619.09, 886,824.08 and 352,228.42 is: 486,080.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,619.09 : 886,824.08 = 352,228.42 : x
  2. Step 2: Convert to fraction form
    642,619.09/886,824.08 = 352,228.42/x
  3. Step 3: Cross multiply
    642,619.09x = 886,824.08 × 352,228.42
  4. Step 4: Simplify right side
    642,619.09x = 312,364,644,516.35
  5. Step 5: Solve for x
    x = 312,364,644,516.35/642,619.09
  6. Step 6: Final answer
    x = 486,080.56

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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.