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Finding the Fourth Proportional to 538,816.80, 809,780.40 and 529,485.60

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Solution

The fourth proportional to 538,816.80, 809,780.40 and 529,485.60 is: 795,756.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,816.80 : 809,780.40 = 529,485.60 : x
  2. Step 2: Convert to fraction form
    538,816.80/809,780.40 = 529,485.60/x
  3. Step 3: Cross multiply
    538,816.80x = 809,780.40 × 529,485.60
  4. Step 4: Simplify right side
    538,816.80x = 428,767,060,962.24
  5. Step 5: Solve for x
    x = 428,767,060,962.24/538,816.80
  6. Step 6: Final answer
    x = 795,756.67

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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.