Home / 1,107,421.20-1,661,131.80-634,154.40

Finding the Fourth Proportional to 1,107,421.20, 1,661,131.80 and 634,154.40

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Solution

The fourth proportional to 1,107,421.20, 1,661,131.80 and 634,154.40 is: 951,231.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,107,421.20 : 1,661,131.80 = 634,154.40 : x
  2. Step 2: Convert to fraction form
    1,107,421.20/1,661,131.80 = 634,154.40/x
  3. Step 3: Cross multiply
    1,107,421.20x = 1,661,131.80 × 634,154.40
  4. Step 4: Simplify right side
    1,107,421.20x = 1,053,414,039,949.92
  5. Step 5: Solve for x
    x = 1,053,414,039,949.92/1,107,421.20
  6. Step 6: Final answer
    x = 951,231.60

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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.