Home / 728,114.84-1,004,803.14-405,845.37

Finding the Fourth Proportional to 728,114.84, 1,004,803.14 and 405,845.37

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Solution

The fourth proportional to 728,114.84, 1,004,803.14 and 405,845.37 is: 560,069.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,114.84 : 1,004,803.14 = 405,845.37 : x
  2. Step 2: Convert to fraction form
    728,114.84/1,004,803.14 = 405,845.37/x
  3. Step 3: Cross multiply
    728,114.84x = 1,004,803.14 × 405,845.37
  4. Step 4: Simplify right side
    728,114.84x = 407,794,702,130.46
  5. Step 5: Solve for x
    x = 407,794,702,130.46/728,114.84
  6. Step 6: Final answer
    x = 560,069.21

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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.