Home / 810,211.40-1,118,103.42-447,643.64

Finding the Fourth Proportional to 810,211.40, 1,118,103.42 and 447,643.64

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Solution

The fourth proportional to 810,211.40, 1,118,103.42 and 447,643.64 is: 617,754.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,211.40 : 1,118,103.42 = 447,643.64 : x
  2. Step 2: Convert to fraction form
    810,211.40/1,118,103.42 = 447,643.64/x
  3. Step 3: Cross multiply
    810,211.40x = 1,118,103.42 × 447,643.64
  4. Step 4: Simplify right side
    810,211.40x = 500,511,884,825.25
  5. Step 5: Solve for x
    x = 500,511,884,825.25/810,211.40
  6. Step 6: Final answer
    x = 617,754.68

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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.