Home / 810,474.24-1,118,476.80-447,921.60

Finding the Fourth Proportional to 810,474.24, 1,118,476.80 and 447,921.60

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Solution

The fourth proportional to 810,474.24, 1,118,476.80 and 447,921.60 is: 618,144.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,474.24 : 1,118,476.80 = 447,921.60 : x
  2. Step 2: Convert to fraction form
    810,474.24/1,118,476.80 = 447,921.60/x
  3. Step 3: Cross multiply
    810,474.24x = 1,118,476.80 × 447,921.60
  4. Step 4: Simplify right side
    810,474.24x = 500,989,917,818.88
  5. Step 5: Solve for x
    x = 500,989,917,818.88/810,474.24
  6. Step 6: Final answer
    x = 618,144.16

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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.