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Finding the Fourth Proportional to 553,690.20, 830,535.30 and 543,192.60

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Solution

The fourth proportional to 553,690.20, 830,535.30 and 543,192.60 is: 814,788.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,690.20 : 830,535.30 = 543,192.60 : x
  2. Step 2: Convert to fraction form
    553,690.20/830,535.30 = 543,192.60/x
  3. Step 3: Cross multiply
    553,690.20x = 830,535.30 × 543,192.60
  4. Step 4: Simplify right side
    553,690.20x = 451,140,628,998.78
  5. Step 5: Solve for x
    x = 451,140,628,998.78/553,690.20
  6. Step 6: Final answer
    x = 814,788.90

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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.