Home / 509,917.80-764,986.05-154,967.70

Finding the Fourth Proportional to 509,917.80, 764,986.05 and 154,967.70

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Solution

The fourth proportional to 509,917.80, 764,986.05 and 154,967.70 is: 232,484.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,917.80 : 764,986.05 = 154,967.70 : x
  2. Step 2: Convert to fraction form
    509,917.80/764,986.05 = 154,967.70/x
  3. Step 3: Cross multiply
    509,917.80x = 764,986.05 × 154,967.70
  4. Step 4: Simplify right side
    509,917.80x = 118,548,128,700.59
  5. Step 5: Solve for x
    x = 118,548,128,700.59/509,917.80
  6. Step 6: Final answer
    x = 232,484.78

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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.