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Finding the Fourth Proportional to 1,030,615.80, 1,545,923.70 and 764,895.30

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Solution

The fourth proportional to 1,030,615.80, 1,545,923.70 and 764,895.30 is: 1,147,342.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,030,615.80 : 1,545,923.70 = 764,895.30 : x
  2. Step 2: Convert to fraction form
    1,030,615.80/1,545,923.70 = 764,895.30/x
  3. Step 3: Cross multiply
    1,030,615.80x = 1,545,923.70 × 764,895.30
  4. Step 4: Simplify right side
    1,030,615.80x = 1,182,469,772,288.61
  5. Step 5: Solve for x
    x = 1,182,469,772,288.61/1,030,615.80
  6. Step 6: Final answer
    x = 1,147,342.95

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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.