Home / 788,842.20-1,182,615.30-339,907.80

Finding the Fourth Proportional to 788,842.20, 1,182,615.30 and 339,907.80

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Solution

The fourth proportional to 788,842.20, 1,182,615.30 and 339,907.80 is: 509,582.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    788,842.20 : 1,182,615.30 = 339,907.80 : x
  2. Step 2: Convert to fraction form
    788,842.20/1,182,615.30 = 339,907.80/x
  3. Step 3: Cross multiply
    788,842.20x = 1,182,615.30 × 339,907.80
  4. Step 4: Simplify right side
    788,842.20x = 401,980,164,869.34
  5. Step 5: Solve for x
    x = 401,980,164,869.34/788,842.20
  6. Step 6: Final answer
    x = 509,582.48

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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.