Home / 1,318,431.80-1,977,647.70-321,159.80

Finding the Fourth Proportional to 1,318,431.80, 1,977,647.70 and 321,159.80

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Solution

The fourth proportional to 1,318,431.80, 1,977,647.70 and 321,159.80 is: 481,739.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,318,431.80 : 1,977,647.70 = 321,159.80 : x
  2. Step 2: Convert to fraction form
    1,318,431.80/1,977,647.70 = 321,159.80/x
  3. Step 3: Cross multiply
    1,318,431.80x = 1,977,647.70 × 321,159.80
  4. Step 4: Simplify right side
    1,318,431.80x = 635,140,939,802.46
  5. Step 5: Solve for x
    x = 635,140,939,802.46/1,318,431.80
  6. Step 6: Final answer
    x = 481,739.70

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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.