Home / 807,858.77-1,210,757.63-428,961.02

Finding the Fourth Proportional to 807,858.77, 1,210,757.63 and 428,961.02

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Solution

The fourth proportional to 807,858.77, 1,210,757.63 and 428,961.02 is: 642,894.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    807,858.77 : 1,210,757.63 = 428,961.02 : x
  2. Step 2: Convert to fraction form
    807,858.77/1,210,757.63 = 428,961.02/x
  3. Step 3: Cross multiply
    807,858.77x = 1,210,757.63 × 428,961.02
  4. Step 4: Simplify right side
    807,858.77x = 519,367,819,738.99
  5. Step 5: Solve for x
    x = 519,367,819,738.99/807,858.77
  6. Step 6: Final answer
    x = 642,894.33

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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.