Home / 509,918.30-764,986.80-154,968.20

Finding the Fourth Proportional to 509,918.30, 764,986.80 and 154,968.20

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Solution

The fourth proportional to 509,918.30, 764,986.80 and 154,968.20 is: 232,485.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,918.30 : 764,986.80 = 154,968.20 : x
  2. Step 2: Convert to fraction form
    509,918.30/764,986.80 = 154,968.20/x
  3. Step 3: Cross multiply
    509,918.30x = 764,986.80 × 154,968.20
  4. Step 4: Simplify right side
    509,918.30x = 118,548,627,419.76
  5. Step 5: Solve for x
    x = 118,548,627,419.76/509,918.30
  6. Step 6: Final answer
    x = 232,485.53

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Double scale
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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.