Home / 686,205.18-946,963.26-384,399.18

Finding the Fourth Proportional to 686,205.18, 946,963.26 and 384,399.18

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Solution

The fourth proportional to 686,205.18, 946,963.26 and 384,399.18 is: 530,470.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,205.18 : 946,963.26 = 384,399.18 : x
  2. Step 2: Convert to fraction form
    686,205.18/946,963.26 = 384,399.18/x
  3. Step 3: Cross multiply
    686,205.18x = 946,963.26 × 384,399.18
  4. Step 4: Simplify right side
    686,205.18x = 364,011,900,634.13
  5. Step 5: Solve for x
    x = 364,011,900,634.13/686,205.18
  6. Step 6: Final answer
    x = 530,470.93

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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.