Home / 641,731.32-885,596.22-355,256.46

Finding the Fourth Proportional to 641,731.32, 885,596.22 and 355,256.46

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Solution

The fourth proportional to 641,731.32, 885,596.22 and 355,256.46 is: 490,257.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,731.32 : 885,596.22 = 355,256.46 : x
  2. Step 2: Convert to fraction form
    641,731.32/885,596.22 = 355,256.46/x
  3. Step 3: Cross multiply
    641,731.32x = 885,596.22 × 355,256.46
  4. Step 4: Simplify right side
    641,731.32x = 314,613,778,106.58
  5. Step 5: Solve for x
    x = 314,613,778,106.58/641,731.32
  6. Step 6: Final answer
    x = 490,257.79

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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.