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Finding the Fourth Proportional to 2,221,012.80, 3,116,503.80 and 2,221,012.80

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Solution

The fourth proportional to 2,221,012.80, 3,116,503.80 and 2,221,012.80 is: 3,116,503.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,221,012.80 : 3,116,503.80 = 2,221,012.80 : x
  2. Step 2: Convert to fraction form
    2,221,012.80/3,116,503.80 = 2,221,012.80/x
  3. Step 3: Cross multiply
    2,221,012.80x = 3,116,503.80 × 2,221,012.80
  4. Step 4: Simplify right side
    2,221,012.80x = 6,921,794,831,048.64
  5. Step 5: Solve for x
    x = 6,921,794,831,048.64/2,221,012.80
  6. Step 6: Final answer
    x = 3,116,503.80

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.