Home / 854,123.59-1,178,634.36-491,488.91

Finding the Fourth Proportional to 854,123.59, 1,178,634.36 and 491,488.91

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Solution

The fourth proportional to 854,123.59, 1,178,634.36 and 491,488.91 is: 678,222.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    854,123.59 : 1,178,634.36 = 491,488.91 : x
  2. Step 2: Convert to fraction form
    854,123.59/1,178,634.36 = 491,488.91/x
  3. Step 3: Cross multiply
    854,123.59x = 1,178,634.36 × 491,488.91
  4. Step 4: Simplify right side
    854,123.59x = 579,285,716,884.95
  5. Step 5: Solve for x
    x = 579,285,716,884.95/854,123.59
  6. Step 6: Final answer
    x = 678,222.36

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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.