Home / 990,003.70-1,485,005.55-871,905.70

Finding the Fourth Proportional to 990,003.70, 1,485,005.55 and 871,905.70

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Solution

The fourth proportional to 990,003.70, 1,485,005.55 and 871,905.70 is: 1,307,858.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,003.70 : 1,485,005.55 = 871,905.70 : x
  2. Step 2: Convert to fraction form
    990,003.70/1,485,005.55 = 871,905.70/x
  3. Step 3: Cross multiply
    990,003.70x = 1,485,005.55 × 871,905.70
  4. Step 4: Simplify right side
    990,003.70x = 1,294,784,803,576.64
  5. Step 5: Solve for x
    x = 1,294,784,803,576.64/990,003.70
  6. Step 6: Final answer
    x = 1,307,858.55

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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.