Home / 686,179.75-946,930.28-380,261.18

Finding the Fourth Proportional to 686,179.75, 946,930.28 and 380,261.18

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Solution

The fourth proportional to 686,179.75, 946,930.28 and 380,261.18 is: 524,761.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,179.75 : 946,930.28 = 380,261.18 : x
  2. Step 2: Convert to fraction form
    686,179.75/946,930.28 = 380,261.18/x
  3. Step 3: Cross multiply
    686,179.75x = 946,930.28 × 380,261.18
  4. Step 4: Simplify right side
    686,179.75x = 360,080,821,866.53
  5. Step 5: Solve for x
    x = 360,080,821,866.53/686,179.75
  6. Step 6: Final answer
    x = 524,761.66

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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.