Home / 879,987.40-1,319,106.30-405,845.80

Finding the Fourth Proportional to 879,987.40, 1,319,106.30 and 405,845.80

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Solution

The fourth proportional to 879,987.40, 1,319,106.30 and 405,845.80 is: 608,365.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,987.40 : 1,319,106.30 = 405,845.80 : x
  2. Step 2: Convert to fraction form
    879,987.40/1,319,106.30 = 405,845.80/x
  3. Step 3: Cross multiply
    879,987.40x = 1,319,106.30 × 405,845.80
  4. Step 4: Simplify right side
    879,987.40x = 535,353,751,608.54
  5. Step 5: Solve for x
    x = 535,353,751,608.54/879,987.40
  6. Step 6: Final answer
    x = 608,365.25

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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.