Home / 639,426.76-882,392.22-352,940.68

Finding the Fourth Proportional to 639,426.76, 882,392.22 and 352,940.68

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Solution

The fourth proportional to 639,426.76, 882,392.22 and 352,940.68 is: 487,048.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,426.76 : 882,392.22 = 352,940.68 : x
  2. Step 2: Convert to fraction form
    639,426.76/882,392.22 = 352,940.68/x
  3. Step 3: Cross multiply
    639,426.76x = 882,392.22 × 352,940.68
  4. Step 4: Simplify right side
    639,426.76x = 311,432,110,153.51
  5. Step 5: Solve for x
    x = 311,432,110,153.51/639,426.76
  6. Step 6: Final answer
    x = 487,048.92

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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.