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Finding the Fourth Proportional to 522,485.13, 783,949.61 and 285,551.02

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Solution

The fourth proportional to 522,485.13, 783,949.61 and 285,551.02 is: 428,447.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,485.13 : 783,949.61 = 285,551.02 : x
  2. Step 2: Convert to fraction form
    522,485.13/783,949.61 = 285,551.02/x
  3. Step 3: Cross multiply
    522,485.13x = 783,949.61 × 285,551.02
  4. Step 4: Simplify right side
    522,485.13x = 223,857,610,851.69
  5. Step 5: Solve for x
    x = 223,857,610,851.69/522,485.13
  6. Step 6: Final answer
    x = 428,447.81

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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.