Home / 1,288,471.42-1,777,804.23-779,162.86

Finding the Fourth Proportional to 1,288,471.42, 1,777,804.23 and 779,162.86

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Solution

The fourth proportional to 1,288,471.42, 1,777,804.23 and 779,162.86 is: 1,075,071.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,288,471.42 : 1,777,804.23 = 779,162.86 : x
  2. Step 2: Convert to fraction form
    1,288,471.42/1,777,804.23 = 779,162.86/x
  3. Step 3: Cross multiply
    1,288,471.42x = 1,777,804.23 × 779,162.86
  4. Step 4: Simplify right side
    1,288,471.42x = 1,385,199,028,366.90
  5. Step 5: Solve for x
    x = 1,385,199,028,366.90/1,288,471.42
  6. Step 6: Final answer
    x = 1,075,071.60

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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.