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Finding the Fourth Proportional to 604,979.87, 905,189.70 and 360,918.37

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Solution

The fourth proportional to 604,979.87, 905,189.70 and 360,918.37 is: 540,017.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    604,979.87 : 905,189.70 = 360,918.37 : x
  2. Step 2: Convert to fraction form
    604,979.87/905,189.70 = 360,918.37/x
  3. Step 3: Cross multiply
    604,979.87x = 905,189.70 × 360,918.37
  4. Step 4: Simplify right side
    604,979.87x = 326,699,586,538.84
  5. Step 5: Solve for x
    x = 326,699,586,538.84/604,979.87
  6. Step 6: Final answer
    x = 540,017.28

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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.