Home / 990,585.20-1,485,877.80-635,999.60

Finding the Fourth Proportional to 990,585.20, 1,485,877.80 and 635,999.60

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Solution

The fourth proportional to 990,585.20, 1,485,877.80 and 635,999.60 is: 953,999.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,585.20 : 1,485,877.80 = 635,999.60 : x
  2. Step 2: Convert to fraction form
    990,585.20/1,485,877.80 = 635,999.60/x
  3. Step 3: Cross multiply
    990,585.20x = 1,485,877.80 × 635,999.60
  4. Step 4: Simplify right side
    990,585.20x = 945,017,686,448.88
  5. Step 5: Solve for x
    x = 945,017,686,448.88/990,585.20
  6. Step 6: Final answer
    x = 953,999.40

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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.