Home / 858,939.17-1,288,361.37-353,372.20

Finding the Fourth Proportional to 858,939.17, 1,288,361.37 and 353,372.20

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Solution

The fourth proportional to 858,939.17, 1,288,361.37 and 353,372.20 is: 530,038.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,939.17 : 1,288,361.37 = 353,372.20 : x
  2. Step 2: Convert to fraction form
    858,939.17/1,288,361.37 = 353,372.20/x
  3. Step 3: Cross multiply
    858,939.17x = 1,288,361.37 × 353,372.20
  4. Step 4: Simplify right side
    858,939.17x = 455,271,094,932.82
  5. Step 5: Solve for x
    x = 455,271,094,932.82/858,939.17
  6. Step 6: Final answer
    x = 530,038.81

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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.