Home / 879,137.14-1,213,144.32-491,901.16

Finding the Fourth Proportional to 879,137.14, 1,213,144.32 and 491,901.16

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Solution

The fourth proportional to 879,137.14, 1,213,144.32 and 491,901.16 is: 678,787.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,137.14 : 1,213,144.32 = 491,901.16 : x
  2. Step 2: Convert to fraction form
    879,137.14/1,213,144.32 = 491,901.16/x
  3. Step 3: Cross multiply
    879,137.14x = 1,213,144.32 × 491,901.16
  4. Step 4: Simplify right side
    879,137.14x = 596,747,098,255.41
  5. Step 5: Solve for x
    x = 596,747,098,255.41/879,137.14
  6. Step 6: Final answer
    x = 678,787.27

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.