Home / 729,891.40-1,007,192.10-407,582.20

Finding the Fourth Proportional to 729,891.40, 1,007,192.10 and 407,582.20

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Solution

The fourth proportional to 729,891.40, 1,007,192.10 and 407,582.20 is: 562,431.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    729,891.40 : 1,007,192.10 = 407,582.20 : x
  2. Step 2: Convert to fraction form
    729,891.40/1,007,192.10 = 407,582.20/x
  3. Step 3: Cross multiply
    729,891.40x = 1,007,192.10 × 407,582.20
  4. Step 4: Simplify right side
    729,891.40x = 410,513,571,940.62
  5. Step 5: Solve for x
    x = 410,513,571,940.62/729,891.40
  6. Step 6: Final answer
    x = 562,431.03

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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.