Home / 686,075.51-946,783.27-380,171.70

Finding the Fourth Proportional to 686,075.51, 946,783.27 and 380,171.70

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Solution

The fourth proportional to 686,075.51, 946,783.27 and 380,171.70 is: 524,636.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,075.51 : 946,783.27 = 380,171.70 : x
  2. Step 2: Convert to fraction form
    686,075.51/946,783.27 = 380,171.70/x
  3. Step 3: Cross multiply
    686,075.51x = 946,783.27 × 380,171.70
  4. Step 4: Simplify right side
    686,075.51x = 359,940,198,652.68
  5. Step 5: Solve for x
    x = 359,940,198,652.68/686,075.51
  6. Step 6: Final answer
    x = 524,636.42

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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.