Home / 1,985,005.80-2,979,063.90-920,179.80

Finding the Fourth Proportional to 1,985,005.80, 2,979,063.90 and 920,179.80

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Solution

The fourth proportional to 1,985,005.80, 2,979,063.90 and 920,179.80 is: 1,380,990.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,985,005.80 : 2,979,063.90 = 920,179.80 : x
  2. Step 2: Convert to fraction form
    1,985,005.80/2,979,063.90 = 920,179.80/x
  3. Step 3: Cross multiply
    1,985,005.80x = 2,979,063.90 × 920,179.80
  4. Step 4: Simplify right side
    1,985,005.80x = 2,741,274,423,689.22
  5. Step 5: Solve for x
    x = 2,741,274,423,689.22/1,985,005.80
  6. Step 6: Final answer
    x = 1,380,990.64

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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.