Home / 818,738.16-1,129,941.36-456,221.04

Finding the Fourth Proportional to 818,738.16, 1,129,941.36 and 456,221.04

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Solution

The fourth proportional to 818,738.16, 1,129,941.36 and 456,221.04 is: 629,631.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,738.16 : 1,129,941.36 = 456,221.04 : x
  2. Step 2: Convert to fraction form
    818,738.16/1,129,941.36 = 456,221.04/x
  3. Step 3: Cross multiply
    818,738.16x = 1,129,941.36 × 456,221.04
  4. Step 4: Simplify right side
    818,738.16x = 515,503,022,398.21
  5. Step 5: Solve for x
    x = 515,503,022,398.21/818,738.16
  6. Step 6: Final answer
    x = 629,631.12

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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.