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Finding the Fourth Proportional to 520,654.79, 718,291.63 and 339,300.65

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Solution

The fourth proportional to 520,654.79, 718,291.63 and 339,300.65 is: 468,096.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,654.79 : 718,291.63 = 339,300.65 : x
  2. Step 2: Convert to fraction form
    520,654.79/718,291.63 = 339,300.65/x
  3. Step 3: Cross multiply
    520,654.79x = 718,291.63 × 339,300.65
  4. Step 4: Simplify right side
    520,654.79x = 243,716,816,948.56
  5. Step 5: Solve for x
    x = 243,716,816,948.56/520,654.79
  6. Step 6: Final answer
    x = 468,096.75

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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.