Home / 1,298,188.72-1,947,467.36-399,705.13

Finding the Fourth Proportional to 1,298,188.72, 1,947,467.36 and 399,705.13

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Solution

The fourth proportional to 1,298,188.72, 1,947,467.36 and 399,705.13 is: 599,614.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,298,188.72 : 1,947,467.36 = 399,705.13 : x
  2. Step 2: Convert to fraction form
    1,298,188.72/1,947,467.36 = 399,705.13/x
  3. Step 3: Cross multiply
    1,298,188.72x = 1,947,467.36 × 399,705.13
  4. Step 4: Simplify right side
    1,298,188.72x = 778,412,694,299.56
  5. Step 5: Solve for x
    x = 778,412,694,299.56/1,298,188.72
  6. Step 6: Final answer
    x = 599,614.43

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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.