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Finding the Fourth Proportional to 1,373,865.50, 1,895,856.99 and 761,974.34

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Solution

The fourth proportional to 1,373,865.50, 1,895,856.99 and 761,974.34 is: 1,051,481.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,373,865.50 : 1,895,856.99 = 761,974.34 : x
  2. Step 2: Convert to fraction form
    1,373,865.50/1,895,856.99 = 761,974.34/x
  3. Step 3: Cross multiply
    1,373,865.50x = 1,895,856.99 × 761,974.34
  4. Step 4: Simplify right side
    1,373,865.50x = 1,444,594,381,303.25
  5. Step 5: Solve for x
    x = 1,444,594,381,303.25/1,373,865.50
  6. Step 6: Final answer
    x = 1,051,481.66

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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.