Home / 685,433.85-945,928.28-379,510.23

Finding the Fourth Proportional to 685,433.85, 945,928.28 and 379,510.23

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Solution

The fourth proportional to 685,433.85, 945,928.28 and 379,510.23 is: 523,740.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,433.85 : 945,928.28 = 379,510.23 : x
  2. Step 2: Convert to fraction form
    685,433.85/945,928.28 = 379,510.23/x
  3. Step 3: Cross multiply
    685,433.85x = 945,928.28 × 379,510.23
  4. Step 4: Simplify right side
    685,433.85x = 358,989,456,146.72
  5. Step 5: Solve for x
    x = 358,989,456,146.72/685,433.85
  6. Step 6: Final answer
    x = 523,740.49

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Double scale
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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.