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Finding the Fourth Proportional to 626,843.40, 940,668.30 and 346,561.80

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Solution

The fourth proportional to 626,843.40, 940,668.30 and 346,561.80 is: 520,065.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,843.40 : 940,668.30 = 346,561.80 : x
  2. Step 2: Convert to fraction form
    626,843.40/940,668.30 = 346,561.80/x
  3. Step 3: Cross multiply
    626,843.40x = 940,668.30 × 346,561.80
  4. Step 4: Simplify right side
    626,843.40x = 325,999,699,250.94
  5. Step 5: Solve for x
    x = 325,999,699,250.94/626,843.40
  6. Step 6: Final answer
    x = 520,065.62

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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.