Home / 1,209,107.12-1,668,593.67-665,244.47

Finding the Fourth Proportional to 1,209,107.12, 1,668,593.67 and 665,244.47

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Solution

The fourth proportional to 1,209,107.12, 1,668,593.67 and 665,244.47 is: 918,051.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,209,107.12 : 1,668,593.67 = 665,244.47 : x
  2. Step 2: Convert to fraction form
    1,209,107.12/1,668,593.67 = 665,244.47/x
  3. Step 3: Cross multiply
    1,209,107.12x = 1,668,593.67 × 665,244.47
  4. Step 4: Simplify right side
    1,209,107.12x = 1,110,022,715,815.99
  5. Step 5: Solve for x
    x = 1,110,022,715,815.99/1,209,107.12
  6. Step 6: Final answer
    x = 918,051.59

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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.