Home / 2,118,979.27-3,178,397.61-920,901.72

Finding the Fourth Proportional to 2,118,979.27, 3,178,397.61 and 920,901.72

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Solution

The fourth proportional to 2,118,979.27, 3,178,397.61 and 920,901.72 is: 1,381,321.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,118,979.27 : 3,178,397.61 = 920,901.72 : x
  2. Step 2: Convert to fraction form
    2,118,979.27/3,178,397.61 = 920,901.72/x
  3. Step 3: Cross multiply
    2,118,979.27x = 3,178,397.61 × 920,901.72
  4. Step 4: Simplify right side
    2,118,979.27x = 2,926,991,837,811.88
  5. Step 5: Solve for x
    x = 2,926,991,837,811.88/2,118,979.27
  6. Step 6: Final answer
    x = 1,381,321.60

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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.