Home / 1,423,616.80-2,140,090.80-1,005,786.40

Finding the Fourth Proportional to 1,423,616.80, 2,140,090.80 and 1,005,786.40

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Solution

The fourth proportional to 1,423,616.80, 2,140,090.80 and 1,005,786.40 is: 1,511,975.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,423,616.80 : 2,140,090.80 = 1,005,786.40 : x
  2. Step 2: Convert to fraction form
    1,423,616.80/2,140,090.80 = 1,005,786.40/x
  3. Step 3: Cross multiply
    1,423,616.80x = 2,140,090.80 × 1,005,786.40
  4. Step 4: Simplify right side
    1,423,616.80x = 2,152,474,221,405.12
  5. Step 5: Solve for x
    x = 2,152,474,221,405.12/1,423,616.80
  6. Step 6: Final answer
    x = 1,511,975.85

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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.