Home / 685,431.60-945,925.14-379,507.96

Finding the Fourth Proportional to 685,431.60, 945,925.14 and 379,507.96

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Solution

The fourth proportional to 685,431.60, 945,925.14 and 379,507.96 is: 523,737.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,431.60 : 945,925.14 = 379,507.96 : x
  2. Step 2: Convert to fraction form
    685,431.60/945,925.14 = 379,507.96/x
  3. Step 3: Cross multiply
    685,431.60x = 945,925.14 × 379,507.96
  4. Step 4: Simplify right side
    685,431.60x = 358,986,120,194.11
  5. Step 5: Solve for x
    x = 358,986,120,194.11/685,431.60
  6. Step 6: Final answer
    x = 523,737.34

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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.