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Finding the Fourth Proportional to 512,897.60, 769,346.40 and 488,403.20

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Solution

The fourth proportional to 512,897.60, 769,346.40 and 488,403.20 is: 732,604.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,897.60 : 769,346.40 = 488,403.20 : x
  2. Step 2: Convert to fraction form
    512,897.60/769,346.40 = 488,403.20/x
  3. Step 3: Cross multiply
    512,897.60x = 769,346.40 × 488,403.20
  4. Step 4: Simplify right side
    512,897.60x = 375,751,243,668.48
  5. Step 5: Solve for x
    x = 375,751,243,668.48/512,897.60
  6. Step 6: Final answer
    x = 732,604.80

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Similar ratio
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1.5x scale

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.