Home / 670,112.80-1,003,808.40-416,615.20

Finding the Fourth Proportional to 670,112.80, 1,003,808.40 and 416,615.20

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Solution

The fourth proportional to 670,112.80, 1,003,808.40 and 416,615.20 is: 624,076.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,112.80 : 1,003,808.40 = 416,615.20 : x
  2. Step 2: Convert to fraction form
    670,112.80/1,003,808.40 = 416,615.20/x
  3. Step 3: Cross multiply
    670,112.80x = 1,003,808.40 × 416,615.20
  4. Step 4: Simplify right side
    670,112.80x = 418,201,837,327.68
  5. Step 5: Solve for x
    x = 418,201,837,327.68/670,112.80
  6. Step 6: Final answer
    x = 624,076.78

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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.