Home / 813,688.56-1,122,859.80-455,969.52

Finding the Fourth Proportional to 813,688.56, 1,122,859.80 and 455,969.52

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Solution

The fourth proportional to 813,688.56, 1,122,859.80 and 455,969.52 is: 629,220.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,688.56 : 1,122,859.80 = 455,969.52 : x
  2. Step 2: Convert to fraction form
    813,688.56/1,122,859.80 = 455,969.52/x
  3. Step 3: Cross multiply
    813,688.56x = 1,122,859.80 × 455,969.52
  4. Step 4: Simplify right side
    813,688.56x = 511,989,844,033.30
  5. Step 5: Solve for x
    x = 511,989,844,033.30/813,688.56
  6. Step 6: Final answer
    x = 629,220.90

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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.