Home / 1,131,451.80-1,697,139.30-290,011.80

Finding the Fourth Proportional to 1,131,451.80, 1,697,139.30 and 290,011.80

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Solution

The fourth proportional to 1,131,451.80, 1,697,139.30 and 290,011.80 is: 435,007.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,131,451.80 : 1,697,139.30 = 290,011.80 : x
  2. Step 2: Convert to fraction form
    1,131,451.80/1,697,139.30 = 290,011.80/x
  3. Step 3: Cross multiply
    1,131,451.80x = 1,697,139.30 × 290,011.80
  4. Step 4: Simplify right side
    1,131,451.80x = 492,190,423,243.74
  5. Step 5: Solve for x
    x = 492,190,423,243.74/1,131,451.80
  6. Step 6: Final answer
    x = 435,007.86

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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.