Home / 686,131.03-946,846.65-380,204.74

Finding the Fourth Proportional to 686,131.03, 946,846.65 and 380,204.74

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Solution

The fourth proportional to 686,131.03, 946,846.65 and 380,204.74 is: 524,674.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,131.03 : 946,846.65 = 380,204.74 : x
  2. Step 2: Convert to fraction form
    686,131.03/946,846.65 = 380,204.74/x
  3. Step 3: Cross multiply
    686,131.03x = 946,846.65 × 380,204.74
  4. Step 4: Simplify right side
    686,131.03x = 359,995,584,383.12
  5. Step 5: Solve for x
    x = 359,995,584,383.12/686,131.03
  6. Step 6: Final answer
    x = 524,674.69

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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.