Home / 3,128,412.80-4,692,619.20-998,566.40

Finding the Fourth Proportional to 3,128,412.80, 4,692,619.20 and 998,566.40

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Solution

The fourth proportional to 3,128,412.80, 4,692,619.20 and 998,566.40 is: 1,497,849.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,128,412.80 : 4,692,619.20 = 998,566.40 : x
  2. Step 2: Convert to fraction form
    3,128,412.80/4,692,619.20 = 998,566.40/x
  3. Step 3: Cross multiply
    3,128,412.80x = 4,692,619.20 × 998,566.40
  4. Step 4: Simplify right side
    3,128,412.80x = 4,685,891,861,114.88
  5. Step 5: Solve for x
    x = 4,685,891,861,114.88/3,128,412.80
  6. Step 6: Final answer
    x = 1,497,849.60

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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.