Home / 813,485.84-1,122,230.76-511,846.16

Finding the Fourth Proportional to 813,485.84, 1,122,230.76 and 511,846.16

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Solution

The fourth proportional to 813,485.84, 1,122,230.76 and 511,846.16 is: 706,108.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,485.84 : 1,122,230.76 = 511,846.16 : x
  2. Step 2: Convert to fraction form
    813,485.84/1,122,230.76 = 511,846.16/x
  3. Step 3: Cross multiply
    813,485.84x = 1,122,230.76 × 511,846.16
  4. Step 4: Simplify right side
    813,485.84x = 574,409,505,139.88
  5. Step 5: Solve for x
    x = 574,409,505,139.88/813,485.84
  6. Step 6: Final answer
    x = 706,108.79

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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.