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Finding the Fourth Proportional to 978,765.80, 1,466,982.30 and 410,145.80

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Solution

The fourth proportional to 978,765.80, 1,466,982.30 and 410,145.80 is: 614,729.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,765.80 : 1,466,982.30 = 410,145.80 : x
  2. Step 2: Convert to fraction form
    978,765.80/1,466,982.30 = 410,145.80/x
  3. Step 3: Cross multiply
    978,765.80x = 1,466,982.30 × 410,145.80
  4. Step 4: Simplify right side
    978,765.80x = 601,676,629,019.34
  5. Step 5: Solve for x
    x = 601,676,629,019.34/978,765.80
  6. Step 6: Final answer
    x = 614,729.93

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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.