Home / 1,390,453.80-2,087,235.90-1,299,085.80

Finding the Fourth Proportional to 1,390,453.80, 2,087,235.90 and 1,299,085.80

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Solution

The fourth proportional to 1,390,453.80, 2,087,235.90 and 1,299,085.80 is: 1,950,081.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,390,453.80 : 2,087,235.90 = 1,299,085.80 : x
  2. Step 2: Convert to fraction form
    1,390,453.80/2,087,235.90 = 1,299,085.80/x
  3. Step 3: Cross multiply
    1,390,453.80x = 2,087,235.90 × 1,299,085.80
  4. Step 4: Simplify right side
    1,390,453.80x = 2,711,498,518,940.22
  5. Step 5: Solve for x
    x = 2,711,498,518,940.22/1,390,453.80
  6. Step 6: Final answer
    x = 1,950,081.71

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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.