Home / 987,999.12-1,362,686.46-850,412.20

Finding the Fourth Proportional to 987,999.12, 1,362,686.46 and 850,412.20

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Solution

The fourth proportional to 987,999.12, 1,362,686.46 and 850,412.20 is: 1,172,921.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    987,999.12 : 1,362,686.46 = 850,412.20 : x
  2. Step 2: Convert to fraction form
    987,999.12/1,362,686.46 = 850,412.20/x
  3. Step 3: Cross multiply
    987,999.12x = 1,362,686.46 × 850,412.20
  4. Step 4: Simplify right side
    987,999.12x = 1,158,845,190,358.81
  5. Step 5: Solve for x
    x = 1,158,845,190,358.81/987,999.12
  6. Step 6: Final answer
    x = 1,172,921.28

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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.