Home / 678,629.80-1,018,059.90-205,311.40

Finding the Fourth Proportional to 678,629.80, 1,018,059.90 and 205,311.40

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Solution

The fourth proportional to 678,629.80, 1,018,059.90 and 205,311.40 is: 308,001.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,629.80 : 1,018,059.90 = 205,311.40 : x
  2. Step 2: Convert to fraction form
    678,629.80/1,018,059.90 = 205,311.40/x
  3. Step 3: Cross multiply
    678,629.80x = 1,018,059.90 × 205,311.40
  4. Step 4: Simplify right side
    678,629.80x = 209,019,303,352.86
  5. Step 5: Solve for x
    x = 209,019,303,352.86/678,629.80
  6. Step 6: Final answer
    x = 308,001.95

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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.