Home / 854,125.09-1,178,636.43-491,490.42

Finding the Fourth Proportional to 854,125.09, 1,178,636.43 and 491,490.42

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Solution

The fourth proportional to 854,125.09, 1,178,636.43 and 491,490.42 is: 678,224.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    854,125.09 : 1,178,636.43 = 491,490.42 : x
  2. Step 2: Convert to fraction form
    854,125.09/1,178,636.43 = 491,490.42/x
  3. Step 3: Cross multiply
    854,125.09x = 1,178,636.43 × 491,490.42
  4. Step 4: Simplify right side
    854,125.09x = 579,288,514,008.00
  5. Step 5: Solve for x
    x = 579,288,514,008.00/854,125.09
  6. Step 6: Final answer
    x = 678,224.44

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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.