Home / 727,815.40-1,091,723.10-407,638.60

Finding the Fourth Proportional to 727,815.40, 1,091,723.10 and 407,638.60

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Solution

The fourth proportional to 727,815.40, 1,091,723.10 and 407,638.60 is: 611,457.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    727,815.40 : 1,091,723.10 = 407,638.60 : x
  2. Step 2: Convert to fraction form
    727,815.40/1,091,723.10 = 407,638.60/x
  3. Step 3: Cross multiply
    727,815.40x = 1,091,723.10 × 407,638.60
  4. Step 4: Simplify right side
    727,815.40x = 445,028,476,071.66
  5. Step 5: Solve for x
    x = 445,028,476,071.66/727,815.40
  6. Step 6: Final answer
    x = 611,457.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.