Home / 686,033.02-1,029,158.61-212,620.42

Finding the Fourth Proportional to 686,033.02, 1,029,158.61 and 212,620.42

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Solution

The fourth proportional to 686,033.02, 1,029,158.61 and 212,620.42 is: 318,964.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,033.02 : 1,029,158.61 = 212,620.42 : x
  2. Step 2: Convert to fraction form
    686,033.02/1,029,158.61 = 212,620.42/x
  3. Step 3: Cross multiply
    686,033.02x = 1,029,158.61 × 212,620.42
  4. Step 4: Simplify right side
    686,033.02x = 218,820,135,904.82
  5. Step 5: Solve for x
    x = 218,820,135,904.82/686,033.02
  6. Step 6: Final answer
    x = 318,964.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.