Home / 1,290,379.74-1,780,823.79-774,152.97

Finding the Fourth Proportional to 1,290,379.74, 1,780,823.79 and 774,152.97

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Solution

The fourth proportional to 1,290,379.74, 1,780,823.79 and 774,152.97 is: 1,068,390.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,379.74 : 1,780,823.79 = 774,152.97 : x
  2. Step 2: Convert to fraction form
    1,290,379.74/1,780,823.79 = 774,152.97/x
  3. Step 3: Cross multiply
    1,290,379.74x = 1,780,823.79 × 774,152.97
  4. Step 4: Simplify right side
    1,290,379.74x = 1,378,630,026,075.16
  5. Step 5: Solve for x
    x = 1,378,630,026,075.16/1,290,379.74
  6. Step 6: Final answer
    x = 1,068,390.94

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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.