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Finding the Fourth Proportional to 987,748.80, 1,481,623.20 and 949,041.60

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Solution

The fourth proportional to 987,748.80, 1,481,623.20 and 949,041.60 is: 1,423,562.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    987,748.80 : 1,481,623.20 = 949,041.60 : x
  2. Step 2: Convert to fraction form
    987,748.80/1,481,623.20 = 949,041.60/x
  3. Step 3: Cross multiply
    987,748.80x = 1,481,623.20 × 949,041.60
  4. Step 4: Simplify right side
    987,748.80x = 1,406,122,052,325.12
  5. Step 5: Solve for x
    x = 1,406,122,052,325.12/987,748.80
  6. Step 6: Final answer
    x = 1,423,562.40

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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.