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Finding the Fourth Proportional to 982,900.80, 1,475,128.80 and 384,148.80

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Solution

The fourth proportional to 982,900.80, 1,475,128.80 and 384,148.80 is: 576,527.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    982,900.80 : 1,475,128.80 = 384,148.80 : x
  2. Step 2: Convert to fraction form
    982,900.80/1,475,128.80 = 384,148.80/x
  3. Step 3: Cross multiply
    982,900.80x = 1,475,128.80 × 384,148.80
  4. Step 4: Simplify right side
    982,900.80x = 566,668,958,365.44
  5. Step 5: Solve for x
    x = 566,668,958,365.44/982,900.80
  6. Step 6: Final answer
    x = 576,527.11

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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.