Home / 818,640.34-1,129,720.82-456,042.76

Finding the Fourth Proportional to 818,640.34, 1,129,720.82 and 456,042.76

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Solution

The fourth proportional to 818,640.34, 1,129,720.82 and 456,042.76 is: 629,337.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,640.34 : 1,129,720.82 = 456,042.76 : x
  2. Step 2: Convert to fraction form
    818,640.34/1,129,720.82 = 456,042.76/x
  3. Step 3: Cross multiply
    818,640.34x = 1,129,720.82 × 456,042.76
  4. Step 4: Simplify right side
    818,640.34x = 515,201,000,782.26
  5. Step 5: Solve for x
    x = 515,201,000,782.26/818,640.34
  6. Step 6: Final answer
    x = 629,337.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.