Home / 768,005.20-1,152,007.80-430,699.60

Finding the Fourth Proportional to 768,005.20, 1,152,007.80 and 430,699.60

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Solution

The fourth proportional to 768,005.20, 1,152,007.80 and 430,699.60 is: 646,049.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,005.20 : 1,152,007.80 = 430,699.60 : x
  2. Step 2: Convert to fraction form
    768,005.20/1,152,007.80 = 430,699.60/x
  3. Step 3: Cross multiply
    768,005.20x = 1,152,007.80 × 430,699.60
  4. Step 4: Simplify right side
    768,005.20x = 496,169,298,656.88
  5. Step 5: Solve for x
    x = 496,169,298,656.88/768,005.20
  6. Step 6: Final answer
    x = 646,049.40

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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.