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Finding the Fourth Proportional to 691,649.50, 954,476.31 and 373,697.50

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Solution

The fourth proportional to 691,649.50, 954,476.31 and 373,697.50 is: 515,702.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,649.50 : 954,476.31 = 373,697.50 : x
  2. Step 2: Convert to fraction form
    691,649.50/954,476.31 = 373,697.50/x
  3. Step 3: Cross multiply
    691,649.50x = 954,476.31 × 373,697.50
  4. Step 4: Simplify right side
    691,649.50x = 356,685,410,856.23
  5. Step 5: Solve for x
    x = 356,685,410,856.23/691,649.50
  6. Step 6: Final answer
    x = 515,702.55

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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.