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Finding the Fourth Proportional to 519,023.60, 777,613.80 and 321,801.20

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Solution

The fourth proportional to 519,023.60, 777,613.80 and 321,801.20 is: 482,130.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,023.60 : 777,613.80 = 321,801.20 : x
  2. Step 2: Convert to fraction form
    519,023.60/777,613.80 = 321,801.20/x
  3. Step 3: Cross multiply
    519,023.60x = 777,613.80 × 321,801.20
  4. Step 4: Simplify right side
    519,023.60x = 250,237,053,976.56
  5. Step 5: Solve for x
    x = 250,237,053,976.56/519,023.60
  6. Step 6: Final answer
    x = 482,130.40

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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.