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Finding the Fourth Proportional to 554,993.20, 765,887.73 and 300,344.38

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Solution

The fourth proportional to 554,993.20, 765,887.73 and 300,344.38 is: 414,473.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,993.20 : 765,887.73 = 300,344.38 : x
  2. Step 2: Convert to fraction form
    554,993.20/765,887.73 = 300,344.38/x
  3. Step 3: Cross multiply
    554,993.20x = 765,887.73 × 300,344.38
  4. Step 4: Simplify right side
    554,993.20x = 230,030,075,416.46
  5. Step 5: Solve for x
    x = 230,030,075,416.46/554,993.20
  6. Step 6: Final answer
    x = 414,473.68

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1.5x scale

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.