Home / 854,121.02-1,178,630.84-491,486.35

Finding the Fourth Proportional to 854,121.02, 1,178,630.84 and 491,486.35

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Solution

The fourth proportional to 854,121.02, 1,178,630.84 and 491,486.35 is: 678,218.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    854,121.02 : 1,178,630.84 = 491,486.35 : x
  2. Step 2: Convert to fraction form
    854,121.02/1,178,630.84 = 491,486.35/x
  3. Step 3: Cross multiply
    854,121.02x = 1,178,630.84 × 491,486.35
  4. Step 4: Simplify right side
    854,121.02x = 579,280,961,198.45
  5. Step 5: Solve for x
    x = 579,280,961,198.45/854,121.02
  6. Step 6: Final answer
    x = 678,218.84

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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.