Home / 1,698,643.40-2,547,965.10-1,379,778.80

Finding the Fourth Proportional to 1,698,643.40, 2,547,965.10 and 1,379,778.80

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Solution

The fourth proportional to 1,698,643.40, 2,547,965.10 and 1,379,778.80 is: 2,069,668.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,698,643.40 : 2,547,965.10 = 1,379,778.80 : x
  2. Step 2: Convert to fraction form
    1,698,643.40/2,547,965.10 = 1,379,778.80/x
  3. Step 3: Cross multiply
    1,698,643.40x = 2,547,965.10 × 1,379,778.80
  4. Step 4: Simplify right side
    1,698,643.40x = 3,515,628,228,119.88
  5. Step 5: Solve for x
    x = 3,515,628,228,119.88/1,698,643.40
  6. Step 6: Final answer
    x = 2,069,668.20

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Similar ratio
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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.