Home / 686,185.38-946,938.05-380,266.80

Finding the Fourth Proportional to 686,185.38, 946,938.05 and 380,266.80

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Solution

The fourth proportional to 686,185.38, 946,938.05 and 380,266.80 is: 524,769.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,185.38 : 946,938.05 = 380,266.80 : x
  2. Step 2: Convert to fraction form
    686,185.38/946,938.05 = 380,266.80/x
  3. Step 3: Cross multiply
    686,185.38x = 946,938.05 × 380,266.80
  4. Step 4: Simplify right side
    686,185.38x = 360,089,102,071.74
  5. Step 5: Solve for x
    x = 360,089,102,071.74/686,185.38
  6. Step 6: Final answer
    x = 524,769.42

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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.