Home / 589,640.21-884,899.69-438,186.21

Finding the Fourth Proportional to 589,640.21, 884,899.69 and 438,186.21

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Solution

The fourth proportional to 589,640.21, 884,899.69 and 438,186.21 is: 657,605.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    589,640.21 : 884,899.69 = 438,186.21 : x
  2. Step 2: Convert to fraction form
    589,640.21/884,899.69 = 438,186.21/x
  3. Step 3: Cross multiply
    589,640.21x = 884,899.69 × 438,186.21
  4. Step 4: Simplify right side
    589,640.21x = 387,750,836,977.44
  5. Step 5: Solve for x
    x = 387,750,836,977.44/589,640.21
  6. Step 6: Final answer
    x = 657,605.83

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Double scale
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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.