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Finding the Fourth Proportional to 914,668.20, 1,372,002.30 and 863,346.60

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Solution

The fourth proportional to 914,668.20, 1,372,002.30 and 863,346.60 is: 1,295,019.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    914,668.20 : 1,372,002.30 = 863,346.60 : x
  2. Step 2: Convert to fraction form
    914,668.20/1,372,002.30 = 863,346.60/x
  3. Step 3: Cross multiply
    914,668.20x = 1,372,002.30 × 863,346.60
  4. Step 4: Simplify right side
    914,668.20x = 1,184,513,520,897.18
  5. Step 5: Solve for x
    x = 1,184,513,520,897.18/914,668.20
  6. Step 6: Final answer
    x = 1,295,019.90

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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.