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Finding the Fourth Proportional to 639,475.63, 882,476.54 and 352,995.91

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Solution

The fourth proportional to 639,475.63, 882,476.54 and 352,995.91 is: 487,134.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,475.63 : 882,476.54 = 352,995.91 : x
  2. Step 2: Convert to fraction form
    639,475.63/882,476.54 = 352,995.91/x
  3. Step 3: Cross multiply
    639,475.63x = 882,476.54 × 352,995.91
  4. Step 4: Simplify right side
    639,475.63x = 311,510,609,290.95
  5. Step 5: Solve for x
    x = 311,510,609,290.95/639,475.63
  6. Step 6: Final answer
    x = 487,134.45

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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.