Home / 854,035.09-1,178,685.62-491,451.55

Finding the Fourth Proportional to 854,035.09, 1,178,685.62 and 491,451.55

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Solution

The fourth proportional to 854,035.09, 1,178,685.62 and 491,451.55 is: 678,270.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    854,035.09 : 1,178,685.62 = 491,451.55 : x
  2. Step 2: Convert to fraction form
    854,035.09/1,178,685.62 = 491,451.55/x
  3. Step 3: Cross multiply
    854,035.09x = 1,178,685.62 × 491,451.55
  4. Step 4: Simplify right side
    854,035.09x = 579,266,872,454.45
  5. Step 5: Solve for x
    x = 579,266,872,454.45/854,035.09
  6. Step 6: Final answer
    x = 678,270.58

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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.