Home / 1,279,457.33-1,919,054.12-426,436.80

Finding the Fourth Proportional to 1,279,457.33, 1,919,054.12 and 426,436.80

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Solution

The fourth proportional to 1,279,457.33, 1,919,054.12 and 426,436.80 is: 639,611.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,279,457.33 : 1,919,054.12 = 426,436.80 : x
  2. Step 2: Convert to fraction form
    1,279,457.33/1,919,054.12 = 426,436.80/x
  3. Step 3: Cross multiply
    1,279,457.33x = 1,919,054.12 × 426,436.80
  4. Step 4: Simplify right side
    1,279,457.33x = 818,355,295,827.43
  5. Step 5: Solve for x
    x = 818,355,295,827.43/1,279,457.33
  6. Step 6: Final answer
    x = 639,611.25

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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.