Home / 1,208,530.80-1,667,641.74-699,138

Finding the Fourth Proportional to 1,208,530.80, 1,667,641.74 and 699,138

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Solution

The fourth proportional to 1,208,530.80, 1,667,641.74 and 699,138 is: 964,734.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,208,530.80 : 1,667,641.74 = 699,138 : x
  2. Step 2: Convert to fraction form
    1,208,530.80/1,667,641.74 = 699,138/x
  3. Step 3: Cross multiply
    1,208,530.80x = 1,667,641.74 × 699,138
  4. Step 4: Simplify right side
    1,208,530.80x = 1,165,911,710,820.12
  5. Step 5: Solve for x
    x = 1,165,911,710,820.12/1,208,530.80
  6. Step 6: Final answer
    x = 964,734.79

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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.