Home / 818,048.90-1,227,249.30-407,941.70

Finding the Fourth Proportional to 818,048.90, 1,227,249.30 and 407,941.70

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Solution

The fourth proportional to 818,048.90, 1,227,249.30 and 407,941.70 is: 612,000.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,048.90 : 1,227,249.30 = 407,941.70 : x
  2. Step 2: Convert to fraction form
    818,048.90/1,227,249.30 = 407,941.70/x
  3. Step 3: Cross multiply
    818,048.90x = 1,227,249.30 × 407,941.70
  4. Step 4: Simplify right side
    818,048.90x = 500,646,165,765.81
  5. Step 5: Solve for x
    x = 500,646,165,765.81/818,048.90
  6. Step 6: Final answer
    x = 612,000.29

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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.