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Finding the Fourth Proportional to 641,952.59, 885,893.94 and 355,472.67

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Solution

The fourth proportional to 641,952.59, 885,893.94 and 355,472.67 is: 490,551.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,952.59 : 885,893.94 = 355,472.67 : x
  2. Step 2: Convert to fraction form
    641,952.59/885,893.94 = 355,472.67/x
  3. Step 3: Cross multiply
    641,952.59x = 885,893.94 × 355,472.67
  4. Step 4: Simplify right side
    641,952.59x = 314,911,084,188.62
  5. Step 5: Solve for x
    x = 314,911,084,188.62/641,952.59
  6. Step 6: Final answer
    x = 490,551.94

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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.