Home / 987,610.40-1,481,415.60-977,112.80

Finding the Fourth Proportional to 987,610.40, 1,481,415.60 and 977,112.80

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Solution

The fourth proportional to 987,610.40, 1,481,415.60 and 977,112.80 is: 1,465,669.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    987,610.40 : 1,481,415.60 = 977,112.80 : x
  2. Step 2: Convert to fraction form
    987,610.40/1,481,415.60 = 977,112.80/x
  3. Step 3: Cross multiply
    987,610.40x = 1,481,415.60 × 977,112.80
  4. Step 4: Simplify right side
    987,610.40x = 1,447,510,144,879.68
  5. Step 5: Solve for x
    x = 1,447,510,144,879.68/987,610.40
  6. Step 6: Final answer
    x = 1,465,669.20

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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.