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Finding the Fourth Proportional to 643,702.61, 965,722.17 and 373,571.07

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Solution

The fourth proportional to 643,702.61, 965,722.17 and 373,571.07 is: 560,454.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,702.61 : 965,722.17 = 373,571.07 : x
  2. Step 2: Convert to fraction form
    643,702.61/965,722.17 = 373,571.07/x
  3. Step 3: Cross multiply
    643,702.61x = 965,722.17 × 373,571.07
  4. Step 4: Simplify right side
    643,702.61x = 360,765,864,369.62
  5. Step 5: Solve for x
    x = 360,765,864,369.62/643,702.61
  6. Step 6: Final answer
    x = 560,454.25

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.