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Finding the Fourth Proportional to 869,768.40, 1,304,652.60 and 745,352.40

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Solution

The fourth proportional to 869,768.40, 1,304,652.60 and 745,352.40 is: 1,118,028.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    869,768.40 : 1,304,652.60 = 745,352.40 : x
  2. Step 2: Convert to fraction form
    869,768.40/1,304,652.60 = 745,352.40/x
  3. Step 3: Cross multiply
    869,768.40x = 1,304,652.60 × 745,352.40
  4. Step 4: Simplify right side
    869,768.40x = 972,425,946,576.24
  5. Step 5: Solve for x
    x = 972,425,946,576.24/869,768.40
  6. Step 6: Final answer
    x = 1,118,028.60

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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.