Home / 768,125.20-1,152,187.80-430,819.60

Finding the Fourth Proportional to 768,125.20, 1,152,187.80 and 430,819.60

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Solution

The fourth proportional to 768,125.20, 1,152,187.80 and 430,819.60 is: 646,229.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,125.20 : 1,152,187.80 = 430,819.60 : x
  2. Step 2: Convert to fraction form
    768,125.20/1,152,187.80 = 430,819.60/x
  3. Step 3: Cross multiply
    768,125.20x = 1,152,187.80 × 430,819.60
  4. Step 4: Simplify right side
    768,125.20x = 496,385,087,120.88
  5. Step 5: Solve for x
    x = 496,385,087,120.88/768,125.20
  6. Step 6: Final answer
    x = 646,229.40

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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.