Home / 1,560,405.80-2,152,751.72-979,289.83

Finding the Fourth Proportional to 1,560,405.80, 2,152,751.72 and 979,289.83

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Solution

The fourth proportional to 1,560,405.80, 2,152,751.72 and 979,289.83 is: 1,351,038.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,560,405.80 : 2,152,751.72 = 979,289.83 : x
  2. Step 2: Convert to fraction form
    1,560,405.80/2,152,751.72 = 979,289.83/x
  3. Step 3: Cross multiply
    1,560,405.80x = 2,152,751.72 × 979,289.83
  4. Step 4: Simplify right side
    1,560,405.80x = 2,108,167,865,911.01
  5. Step 5: Solve for x
    x = 2,108,167,865,911.01/1,560,405.80
  6. Step 6: Final answer
    x = 1,351,038.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.