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Finding the Fourth Proportional to 553,629.20, 830,443.80 and 504,640.40

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Solution

The fourth proportional to 553,629.20, 830,443.80 and 504,640.40 is: 756,960.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,629.20 : 830,443.80 = 504,640.40 : x
  2. Step 2: Convert to fraction form
    553,629.20/830,443.80 = 504,640.40/x
  3. Step 3: Cross multiply
    553,629.20x = 830,443.80 × 504,640.40
  4. Step 4: Simplify right side
    553,629.20x = 419,075,491,409.52
  5. Step 5: Solve for x
    x = 419,075,491,409.52/553,629.20
  6. Step 6: Final answer
    x = 756,960.60

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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.