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Finding the Fourth Proportional to 639,369.48, 882,267.06 and 352,871.07

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Solution

The fourth proportional to 639,369.48, 882,267.06 and 352,871.07 is: 486,927.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,369.48 : 882,267.06 = 352,871.07 : x
  2. Step 2: Convert to fraction form
    639,369.48/882,267.06 = 352,871.07/x
  3. Step 3: Cross multiply
    639,369.48x = 882,267.06 × 352,871.07
  4. Step 4: Simplify right side
    639,369.48x = 311,326,521,487.95
  5. Step 5: Solve for x
    x = 311,326,521,487.95/639,369.48
  6. Step 6: Final answer
    x = 486,927.40

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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.