Home / 2,015,668.72-2,780,643.04-1,289,934.64

Finding the Fourth Proportional to 2,015,668.72, 2,780,643.04 and 1,289,934.64

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Solution

The fourth proportional to 2,015,668.72, 2,780,643.04 and 1,289,934.64 is: 1,779,482.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,015,668.72 : 2,780,643.04 = 1,289,934.64 : x
  2. Step 2: Convert to fraction form
    2,015,668.72/2,780,643.04 = 1,289,934.64/x
  3. Step 3: Cross multiply
    2,015,668.72x = 2,780,643.04 × 1,289,934.64
  4. Step 4: Simplify right side
    2,015,668.72x = 3,586,847,778,770.91
  5. Step 5: Solve for x
    x = 3,586,847,778,770.91/2,015,668.72
  6. Step 6: Final answer
    x = 1,779,482.78

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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.