Home / 1,318,668.21-1,819,995.12-774,803.88

Finding the Fourth Proportional to 1,318,668.21, 1,819,995.12 and 774,803.88

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Solution

The fourth proportional to 1,318,668.21, 1,819,995.12 and 774,803.88 is: 1,069,366.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,318,668.21 : 1,819,995.12 = 774,803.88 : x
  2. Step 2: Convert to fraction form
    1,318,668.21/1,819,995.12 = 774,803.88/x
  3. Step 3: Cross multiply
    1,318,668.21x = 1,819,995.12 × 774,803.88
  4. Step 4: Simplify right side
    1,318,668.21x = 1,410,139,280,557.07
  5. Step 5: Solve for x
    x = 1,410,139,280,557.07/1,318,668.21
  6. Step 6: Final answer
    x = 1,069,366.25

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Why These Related Problems?

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