Home / 728,156.80-1,004,734.56-405,796.48

Finding the Fourth Proportional to 728,156.80, 1,004,734.56 and 405,796.48

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Solution

The fourth proportional to 728,156.80, 1,004,734.56 and 405,796.48 is: 559,931.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,156.80 : 1,004,734.56 = 405,796.48 : x
  2. Step 2: Convert to fraction form
    728,156.80/1,004,734.56 = 405,796.48/x
  3. Step 3: Cross multiply
    728,156.80x = 1,004,734.56 × 405,796.48
  4. Step 4: Simplify right side
    728,156.80x = 407,717,747,782.35
  5. Step 5: Solve for x
    x = 407,717,747,782.35/728,156.80
  6. Step 6: Final answer
    x = 559,931.25

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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.