Home / 728,156.27-1,004,856.75-405,859.45

Finding the Fourth Proportional to 728,156.27, 1,004,856.75 and 405,859.45

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Solution

The fourth proportional to 728,156.27, 1,004,856.75 and 405,859.45 is: 560,086.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,156.27 : 1,004,856.75 = 405,859.45 : x
  2. Step 2: Convert to fraction form
    728,156.27/1,004,856.75 = 405,859.45/x
  3. Step 3: Cross multiply
    728,156.27x = 1,004,856.75 × 405,859.45
  4. Step 4: Simplify right side
    728,156.27x = 407,830,607,883.79
  5. Step 5: Solve for x
    x = 407,830,607,883.79/728,156.27
  6. Step 6: Final answer
    x = 560,086.65

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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.