Home / 1,290,500.58-1,780,879.98-717,535.74

Finding the Fourth Proportional to 1,290,500.58, 1,780,879.98 and 717,535.74

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Solution

The fourth proportional to 1,290,500.58, 1,780,879.98 and 717,535.74 is: 990,193.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,500.58 : 1,780,879.98 = 717,535.74 : x
  2. Step 2: Convert to fraction form
    1,290,500.58/1,780,879.98 = 717,535.74/x
  3. Step 3: Cross multiply
    1,290,500.58x = 1,780,879.98 × 717,535.74
  4. Step 4: Simplify right side
    1,290,500.58x = 1,277,845,034,300.49
  5. Step 5: Solve for x
    x = 1,277,845,034,300.49/1,290,500.58
  6. Step 6: Final answer
    x = 990,193.30

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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.