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Finding the Fourth Proportional to 621,956.49, 858,369.60 and 350,090.52

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Solution

The fourth proportional to 621,956.49, 858,369.60 and 350,090.52 is: 483,164.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,956.49 : 858,369.60 = 350,090.52 : x
  2. Step 2: Convert to fraction form
    621,956.49/858,369.60 = 350,090.52/x
  3. Step 3: Cross multiply
    621,956.49x = 858,369.60 × 350,090.52
  4. Step 4: Simplify right side
    621,956.49x = 300,507,059,616.19
  5. Step 5: Solve for x
    x = 300,507,059,616.19/621,956.49
  6. Step 6: Final answer
    x = 483,164.12

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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.