Home / 729,685.44-1,006,990.38-407,399.40

Finding the Fourth Proportional to 729,685.44, 1,006,990.38 and 407,399.40

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Solution

The fourth proportional to 729,685.44, 1,006,990.38 and 407,399.40 is: 562,224.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    729,685.44 : 1,006,990.38 = 407,399.40 : x
  2. Step 2: Convert to fraction form
    729,685.44/1,006,990.38 = 407,399.40/x
  3. Step 3: Cross multiply
    729,685.44x = 1,006,990.38 × 407,399.40
  4. Step 4: Simplify right side
    729,685.44x = 410,247,276,617.77
  5. Step 5: Solve for x
    x = 410,247,276,617.77/729,685.44
  6. Step 6: Final answer
    x = 562,224.84

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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.