Home / 1,286,968.80-1,776,064.40-777,572.76

Finding the Fourth Proportional to 1,286,968.80, 1,776,064.40 and 777,572.76

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Solution

The fourth proportional to 1,286,968.80, 1,776,064.40 and 777,572.76 is: 1,073,079.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,286,968.80 : 1,776,064.40 = 777,572.76 : x
  2. Step 2: Convert to fraction form
    1,286,968.80/1,776,064.40 = 777,572.76/x
  3. Step 3: Cross multiply
    1,286,968.80x = 1,776,064.40 × 777,572.76
  4. Step 4: Simplify right side
    1,286,968.80x = 1,381,019,307,507.87
  5. Step 5: Solve for x
    x = 1,381,019,307,507.87/1,286,968.80
  6. Step 6: Final answer
    x = 1,073,079.09

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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.