Home / 678,862.27-1,019,183.35-455,223.40

Finding the Fourth Proportional to 678,862.27, 1,019,183.35 and 455,223.40

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Solution

The fourth proportional to 678,862.27, 1,019,183.35 and 455,223.40 is: 683,431.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,862.27 : 1,019,183.35 = 455,223.40 : x
  2. Step 2: Convert to fraction form
    678,862.27/1,019,183.35 = 455,223.40/x
  3. Step 3: Cross multiply
    678,862.27x = 1,019,183.35 × 455,223.40
  4. Step 4: Simplify right side
    678,862.27x = 463,956,112,209.75
  5. Step 5: Solve for x
    x = 463,956,112,209.75/678,862.27
  6. Step 6: Final answer
    x = 683,431.88

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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.