Home / 1,299,308.70-1,946,010.60-821,011.80

Finding the Fourth Proportional to 1,299,308.70, 1,946,010.60 and 821,011.80

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Solution

The fourth proportional to 1,299,308.70, 1,946,010.60 and 821,011.80 is: 1,229,652.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,299,308.70 : 1,946,010.60 = 821,011.80 : x
  2. Step 2: Convert to fraction form
    1,299,308.70/1,946,010.60 = 821,011.80/x
  3. Step 3: Cross multiply
    1,299,308.70x = 1,946,010.60 × 821,011.80
  4. Step 4: Simplify right side
    1,299,308.70x = 1,597,697,665,525.08
  5. Step 5: Solve for x
    x = 1,597,697,665,525.08/1,299,308.70
  6. Step 6: Final answer
    x = 1,229,652.10

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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.