Home / 1,207,840.20-1,666,636.86-663,999

Finding the Fourth Proportional to 1,207,840.20, 1,666,636.86 and 663,999

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Solution

The fourth proportional to 1,207,840.20, 1,666,636.86 and 663,999 is: 916,218.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,207,840.20 : 1,666,636.86 = 663,999 : x
  2. Step 2: Convert to fraction form
    1,207,840.20/1,666,636.86 = 663,999/x
  3. Step 3: Cross multiply
    1,207,840.20x = 1,666,636.86 × 663,999
  4. Step 4: Simplify right side
    1,207,840.20x = 1,106,645,208,403.14
  5. Step 5: Solve for x
    x = 1,106,645,208,403.14/1,207,840.20
  6. Step 6: Final answer
    x = 916,218.23

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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.