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Finding the Fourth Proportional to 1,375,803.64, 1,898,504.94 and 772,075

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Solution

The fourth proportional to 1,375,803.64, 1,898,504.94 and 772,075 is: 1,065,405.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,375,803.64 : 1,898,504.94 = 772,075 : x
  2. Step 2: Convert to fraction form
    1,375,803.64/1,898,504.94 = 772,075/x
  3. Step 3: Cross multiply
    1,375,803.64x = 1,898,504.94 × 772,075
  4. Step 4: Simplify right side
    1,375,803.64x = 1,465,788,201,550.50
  5. Step 5: Solve for x
    x = 1,465,788,201,550.50/1,375,803.64
  6. Step 6: Final answer
    x = 1,065,405.09

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.