Home / 728,392.71-1,004,824.66-486,734.61

Finding the Fourth Proportional to 728,392.71, 1,004,824.66 and 486,734.61

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Solution

The fourth proportional to 728,392.71, 1,004,824.66 and 486,734.61 is: 671,455.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,392.71 : 1,004,824.66 = 486,734.61 : x
  2. Step 2: Convert to fraction form
    728,392.71/1,004,824.66 = 486,734.61/x
  3. Step 3: Cross multiply
    728,392.71x = 1,004,824.66 × 486,734.61
  4. Step 4: Simplify right side
    728,392.71x = 489,082,939,003.48
  5. Step 5: Solve for x
    x = 489,082,939,003.48/728,392.71
  6. Step 6: Final answer
    x = 671,455.02

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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.