Home / 818,410.64-1,129,441.73-455,834.59

Finding the Fourth Proportional to 818,410.64, 1,129,441.73 and 455,834.59

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Solution

The fourth proportional to 818,410.64, 1,129,441.73 and 455,834.59 is: 629,071.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,410.64 : 1,129,441.73 = 455,834.59 : x
  2. Step 2: Convert to fraction form
    818,410.64/1,129,441.73 = 455,834.59/x
  3. Step 3: Cross multiply
    818,410.64x = 1,129,441.73 × 455,834.59
  4. Step 4: Simplify right side
    818,410.64x = 514,838,602,820.66
  5. Step 5: Solve for x
    x = 514,838,602,820.66/818,410.64
  6. Step 6: Final answer
    x = 629,071.25

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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.