Home / 6,647,420.40-9,971,130.60-2,159,696.40

Finding the Fourth Proportional to 6,647,420.40, 9,971,130.60 and 2,159,696.40

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Solution

The fourth proportional to 6,647,420.40, 9,971,130.60 and 2,159,696.40 is: 3,239,544.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,647,420.40 : 9,971,130.60 = 2,159,696.40 : x
  2. Step 2: Convert to fraction form
    6,647,420.40/9,971,130.60 = 2,159,696.40/x
  3. Step 3: Cross multiply
    6,647,420.40x = 9,971,130.60 × 2,159,696.40
  4. Step 4: Simplify right side
    6,647,420.40x = 21,534,614,860,749.84
  5. Step 5: Solve for x
    x = 21,534,614,860,749.84/6,647,420.40
  6. Step 6: Final answer
    x = 3,239,544.60

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Double scale
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Similar ratio
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1.5x scale

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.