Home / 3,879,811.80-5,820,423.42-1,320,895.80

Finding the Fourth Proportional to 3,879,811.80, 5,820,423.42 and 1,320,895.80

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Solution

The fourth proportional to 3,879,811.80, 5,820,423.42 and 1,320,895.80 is: 1,981,583.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,879,811.80 : 5,820,423.42 = 1,320,895.80 : x
  2. Step 2: Convert to fraction form
    3,879,811.80/5,820,423.42 = 1,320,895.80/x
  3. Step 3: Cross multiply
    3,879,811.80x = 5,820,423.42 × 1,320,895.80
  4. Step 4: Simplify right side
    3,879,811.80x = 7,688,172,849,699.64
  5. Step 5: Solve for x
    x = 7,688,172,849,699.64/3,879,811.80
  6. Step 6: Final answer
    x = 1,981,583.96

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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.