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Finding the Fourth Proportional to 978,069.80, 1,464,771.90 and 478,850.60

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Solution

The fourth proportional to 978,069.80, 1,464,771.90 and 478,850.60 is: 717,133.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,069.80 : 1,464,771.90 = 478,850.60 : x
  2. Step 2: Convert to fraction form
    978,069.80/1,464,771.90 = 478,850.60/x
  3. Step 3: Cross multiply
    978,069.80x = 1,464,771.90 × 478,850.60
  4. Step 4: Simplify right side
    978,069.80x = 701,406,903,178.14
  5. Step 5: Solve for x
    x = 701,406,903,178.14/978,069.80
  6. Step 6: Final answer
    x = 717,133.79

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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.