Home / 509,990.30-764,985.45-177,566.30

Finding the Fourth Proportional to 509,990.30, 764,985.45 and 177,566.30

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Solution

The fourth proportional to 509,990.30, 764,985.45 and 177,566.30 is: 266,349.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,990.30 : 764,985.45 = 177,566.30 : x
  2. Step 2: Convert to fraction form
    509,990.30/764,985.45 = 177,566.30/x
  3. Step 3: Cross multiply
    509,990.30x = 764,985.45 × 177,566.30
  4. Step 4: Simplify right side
    509,990.30x = 135,835,635,910.34
  5. Step 5: Solve for x
    x = 135,835,635,910.34/509,990.30
  6. Step 6: Final answer
    x = 266,349.45

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Half scale
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Double scale
Find fourth proportional to 509,991.30, 764,986.95 and 177,567.30
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.