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Finding the Fourth Proportional to 1,412,325.56, 1,949,021.82 and 767,746.80

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Solution

The fourth proportional to 1,412,325.56, 1,949,021.82 and 767,746.80 is: 1,059,497.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,412,325.56 : 1,949,021.82 = 767,746.80 : x
  2. Step 2: Convert to fraction form
    1,412,325.56/1,949,021.82 = 767,746.80/x
  3. Step 3: Cross multiply
    1,412,325.56x = 1,949,021.82 × 767,746.80
  4. Step 4: Simplify right side
    1,412,325.56x = 1,496,355,265,435.18
  5. Step 5: Solve for x
    x = 1,496,355,265,435.18/1,412,325.56
  6. Step 6: Final answer
    x = 1,059,497.40

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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.