Home / 639,415.40-882,393.32-352,935.56

Finding the Fourth Proportional to 639,415.40, 882,393.32 and 352,935.56

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Solution

The fourth proportional to 639,415.40, 882,393.32 and 352,935.56 is: 487,051.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,415.40 : 882,393.32 = 352,935.56 : x
  2. Step 2: Convert to fraction form
    639,415.40/882,393.32 = 352,935.56/x
  3. Step 3: Cross multiply
    639,415.40x = 882,393.32 × 352,935.56
  4. Step 4: Simplify right side
    639,415.40x = 311,427,980,534.46
  5. Step 5: Solve for x
    x = 311,427,980,534.46/639,415.40
  6. Step 6: Final answer
    x = 487,051.11

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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.