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Finding the Fourth Proportional to 509,570.40, 765,230.40 and 332,860.80

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Solution

The fourth proportional to 509,570.40, 765,230.40 and 332,860.80 is: 499,862.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,570.40 : 765,230.40 = 332,860.80 : x
  2. Step 2: Convert to fraction form
    509,570.40/765,230.40 = 332,860.80/x
  3. Step 3: Cross multiply
    509,570.40x = 765,230.40 × 332,860.80
  4. Step 4: Simplify right side
    509,570.40x = 254,715,203,128.32
  5. Step 5: Solve for x
    x = 254,715,203,128.32/509,570.40
  6. Step 6: Final answer
    x = 499,862.64

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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.