Home / 639,385.56-882,289.20-352,887.18

Finding the Fourth Proportional to 639,385.56, 882,289.20 and 352,887.18

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Solution

The fourth proportional to 639,385.56, 882,289.20 and 352,887.18 is: 486,949.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,385.56 : 882,289.20 = 352,887.18 : x
  2. Step 2: Convert to fraction form
    639,385.56/882,289.20 = 352,887.18/x
  3. Step 3: Cross multiply
    639,385.56x = 882,289.20 × 352,887.18
  4. Step 4: Simplify right side
    639,385.56x = 311,348,547,732.46
  5. Step 5: Solve for x
    x = 311,348,547,732.46/639,385.56
  6. Step 6: Final answer
    x = 486,949.61

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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.