Home / 788,578.20-1,182,219.30-339,643.80

Finding the Fourth Proportional to 788,578.20, 1,182,219.30 and 339,643.80

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Solution

The fourth proportional to 788,578.20, 1,182,219.30 and 339,643.80 is: 509,186.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    788,578.20 : 1,182,219.30 = 339,643.80 : x
  2. Step 2: Convert to fraction form
    788,578.20/1,182,219.30 = 339,643.80/x
  3. Step 3: Cross multiply
    788,578.20x = 1,182,219.30 × 339,643.80
  4. Step 4: Simplify right side
    788,578.20x = 401,533,455,485.34
  5. Step 5: Solve for x
    x = 401,533,455,485.34/788,578.20
  6. Step 6: Final answer
    x = 509,186.60

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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.