Home / 639,407.14-882,381.93-352,927.30

Finding the Fourth Proportional to 639,407.14, 882,381.93 and 352,927.30

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Solution

The fourth proportional to 639,407.14, 882,381.93 and 352,927.30 is: 487,039.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,407.14 : 882,381.93 = 352,927.30 : x
  2. Step 2: Convert to fraction form
    639,407.14/882,381.93 = 352,927.30/x
  3. Step 3: Cross multiply
    639,407.14x = 882,381.93 × 352,927.30
  4. Step 4: Simplify right side
    639,407.14x = 311,416,672,123.69
  5. Step 5: Solve for x
    x = 311,416,672,123.69/639,407.14
  6. Step 6: Final answer
    x = 487,039.72

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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.