Home / 729,739.23-1,007,102.39-407,511.60

Finding the Fourth Proportional to 729,739.23, 1,007,102.39 and 407,511.60

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Solution

The fourth proportional to 729,739.23, 1,007,102.39 and 407,511.60 is: 562,400.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    729,739.23 : 1,007,102.39 = 407,511.60 : x
  2. Step 2: Convert to fraction form
    729,739.23/1,007,102.39 = 407,511.60/x
  3. Step 3: Cross multiply
    729,739.23x = 1,007,102.39 × 407,511.60
  4. Step 4: Simplify right side
    729,739.23x = 410,405,906,312.72
  5. Step 5: Solve for x
    x = 410,405,906,312.72/729,739.23
  6. Step 6: Final answer
    x = 562,400.77

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1.5x scale

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.