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Finding the Fourth Proportional to 509,610.60, 764,415.90 and 130,530.60

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Solution

The fourth proportional to 509,610.60, 764,415.90 and 130,530.60 is: 195,795.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,610.60 : 764,415.90 = 130,530.60 : x
  2. Step 2: Convert to fraction form
    509,610.60/764,415.90 = 130,530.60/x
  3. Step 3: Cross multiply
    509,610.60x = 764,415.90 × 130,530.60
  4. Step 4: Simplify right side
    509,610.60x = 99,779,666,076.54
  5. Step 5: Solve for x
    x = 99,779,666,076.54/509,610.60
  6. Step 6: Final answer
    x = 195,795.90

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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.