Home / 867,115.80-1,298,705.40-445,899.60

Finding the Fourth Proportional to 867,115.80, 1,298,705.40 and 445,899.60

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Solution

The fourth proportional to 867,115.80, 1,298,705.40 and 445,899.60 is: 667,837.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    867,115.80 : 1,298,705.40 = 445,899.60 : x
  2. Step 2: Convert to fraction form
    867,115.80/1,298,705.40 = 445,899.60/x
  3. Step 3: Cross multiply
    867,115.80x = 1,298,705.40 × 445,899.60
  4. Step 4: Simplify right side
    867,115.80x = 579,092,218,377.84
  5. Step 5: Solve for x
    x = 579,092,218,377.84/867,115.80
  6. Step 6: Final answer
    x = 667,837.24

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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.