Home / 1,242,405.80-1,863,608.70-443,713.40

Finding the Fourth Proportional to 1,242,405.80, 1,863,608.70 and 443,713.40

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Solution

The fourth proportional to 1,242,405.80, 1,863,608.70 and 443,713.40 is: 665,570.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,242,405.80 : 1,863,608.70 = 443,713.40 : x
  2. Step 2: Convert to fraction form
    1,242,405.80/1,863,608.70 = 443,713.40/x
  3. Step 3: Cross multiply
    1,242,405.80x = 1,863,608.70 × 443,713.40
  4. Step 4: Simplify right side
    1,242,405.80x = 826,908,152,546.58
  5. Step 5: Solve for x
    x = 826,908,152,546.58/1,242,405.80
  6. Step 6: Final answer
    x = 665,570.10

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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.