Home / 1,266,192-1,899,266.40-319,555.80

Finding the Fourth Proportional to 1,266,192, 1,899,266.40 and 319,555.80

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Solution

The fourth proportional to 1,266,192, 1,899,266.40 and 319,555.80 is: 479,328.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,266,192 : 1,899,266.40 = 319,555.80 : x
  2. Step 2: Convert to fraction form
    1,266,192/1,899,266.40 = 319,555.80/x
  3. Step 3: Cross multiply
    1,266,192x = 1,899,266.40 × 319,555.80
  4. Step 4: Simplify right side
    1,266,192x = 606,921,593,865.12
  5. Step 5: Solve for x
    x = 606,921,593,865.12/1,266,192
  6. Step 6: Final answer
    x = 479,328.25

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.