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Finding the Fourth Proportional to 926,956, 1,279,199.28 and 503,020

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Solution

The fourth proportional to 926,956, 1,279,199.28 and 503,020 is: 694,167.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    926,956 : 1,279,199.28 = 503,020 : x
  2. Step 2: Convert to fraction form
    926,956/1,279,199.28 = 503,020/x
  3. Step 3: Cross multiply
    926,956x = 1,279,199.28 × 503,020
  4. Step 4: Simplify right side
    926,956x = 643,462,821,825.60
  5. Step 5: Solve for x
    x = 643,462,821,825.60/926,956
  6. Step 6: Final answer
    x = 694,167.60

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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.