Home / 678,862.67-1,019,183.96-455,223.81

Finding the Fourth Proportional to 678,862.67, 1,019,183.96 and 455,223.81

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Solution

The fourth proportional to 678,862.67, 1,019,183.96 and 455,223.81 is: 683,432.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,862.67 : 1,019,183.96 = 455,223.81 : x
  2. Step 2: Convert to fraction form
    678,862.67/1,019,183.96 = 455,223.81/x
  3. Step 3: Cross multiply
    678,862.67x = 1,019,183.96 × 455,223.81
  4. Step 4: Simplify right side
    678,862.67x = 463,956,804,224.03
  5. Step 5: Solve for x
    x = 463,956,804,224.03/678,862.67
  6. Step 6: Final answer
    x = 683,432.49

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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.