Home / 685,825.95-946,346.07-379,826.79

Finding the Fourth Proportional to 685,825.95, 946,346.07 and 379,826.79

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Solution

The fourth proportional to 685,825.95, 946,346.07 and 379,826.79 is: 524,109.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,825.95 : 946,346.07 = 379,826.79 : x
  2. Step 2: Convert to fraction form
    685,825.95/946,346.07 = 379,826.79/x
  3. Step 3: Cross multiply
    685,825.95x = 946,346.07 × 379,826.79
  4. Step 4: Simplify right side
    685,825.95x = 359,447,589,997.22
  5. Step 5: Solve for x
    x = 359,447,589,997.22/685,825.95
  6. Step 6: Final answer
    x = 524,109.05

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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.