Home / 854,037.84-1,178,689.41-491,454.30

Finding the Fourth Proportional to 854,037.84, 1,178,689.41 and 491,454.30

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Solution

The fourth proportional to 854,037.84, 1,178,689.41 and 491,454.30 is: 678,274.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    854,037.84 : 1,178,689.41 = 491,454.30 : x
  2. Step 2: Convert to fraction form
    854,037.84/1,178,689.41 = 491,454.30/x
  3. Step 3: Cross multiply
    854,037.84x = 1,178,689.41 × 491,454.30
  4. Step 4: Simplify right side
    854,037.84x = 579,271,978,908.96
  5. Step 5: Solve for x
    x = 579,271,978,908.96/854,037.84
  6. Step 6: Final answer
    x = 678,274.37

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Half scale
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Double scale
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Similar ratio
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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.