Home / 685,629.96-946,173.42-379,715.64

Finding the Fourth Proportional to 685,629.96, 946,173.42 and 379,715.64

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Solution

The fourth proportional to 685,629.96, 946,173.42 and 379,715.64 is: 524,009.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,629.96 : 946,173.42 = 379,715.64 : x
  2. Step 2: Convert to fraction form
    685,629.96/946,173.42 = 379,715.64/x
  3. Step 3: Cross multiply
    685,629.96x = 946,173.42 × 379,715.64
  4. Step 4: Simplify right side
    685,629.96x = 359,276,845,726.29
  5. Step 5: Solve for x
    x = 359,276,845,726.29/685,629.96
  6. Step 6: Final answer
    x = 524,009.84

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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.