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Finding the Fourth Proportional to 882,430.21, 1,218,019.90 and 762,855.98

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Solution

The fourth proportional to 882,430.21, 1,218,019.90 and 762,855.98 is: 1,052,971.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    882,430.21 : 1,218,019.90 = 762,855.98 : x
  2. Step 2: Convert to fraction form
    882,430.21/1,218,019.90 = 762,855.98/x
  3. Step 3: Cross multiply
    882,430.21x = 1,218,019.90 × 762,855.98
  4. Step 4: Simplify right side
    882,430.21x = 929,173,764,474.00
  5. Step 5: Solve for x
    x = 929,173,764,474.00/882,430.21
  6. Step 6: Final answer
    x = 1,052,971.39

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.