Home / 1,288,909.92-1,778,409.36-779,601.36

Finding the Fourth Proportional to 1,288,909.92, 1,778,409.36 and 779,601.36

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Solution

The fourth proportional to 1,288,909.92, 1,778,409.36 and 779,601.36 is: 1,075,676.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,288,909.92 : 1,778,409.36 = 779,601.36 : x
  2. Step 2: Convert to fraction form
    1,288,909.92/1,778,409.36 = 779,601.36/x
  3. Step 3: Cross multiply
    1,288,909.92x = 1,778,409.36 × 779,601.36
  4. Step 4: Simplify right side
    1,288,909.92x = 1,386,450,355,692.73
  5. Step 5: Solve for x
    x = 1,386,450,355,692.73/1,288,909.92
  6. Step 6: Final answer
    x = 1,075,676.69

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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.