Home / 686,186.38-946,939.43-380,267.80

Finding the Fourth Proportional to 686,186.38, 946,939.43 and 380,267.80

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Solution

The fourth proportional to 686,186.38, 946,939.43 and 380,267.80 is: 524,770.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,186.38 : 946,939.43 = 380,267.80 : x
  2. Step 2: Convert to fraction form
    686,186.38/946,939.43 = 380,267.80/x
  3. Step 3: Cross multiply
    686,186.38x = 946,939.43 × 380,267.80
  4. Step 4: Simplify right side
    686,186.38x = 360,090,573,779.35
  5. Step 5: Solve for x
    x = 360,090,573,779.35/686,186.38
  6. Step 6: Final answer
    x = 524,770.80

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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.