Home / 1,489,771.20-2,235,580.20-780,308.40

Finding the Fourth Proportional to 1,489,771.20, 2,235,580.20 and 780,308.40

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Solution

The fourth proportional to 1,489,771.20, 2,235,580.20 and 780,308.40 is: 1,170,946.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,489,771.20 : 2,235,580.20 = 780,308.40 : x
  2. Step 2: Convert to fraction form
    1,489,771.20/2,235,580.20 = 780,308.40/x
  3. Step 3: Cross multiply
    1,489,771.20x = 2,235,580.20 × 780,308.40
  4. Step 4: Simplify right side
    1,489,771.20x = 1,744,442,008,933.68
  5. Step 5: Solve for x
    x = 1,744,442,008,933.68/1,489,771.20
  6. Step 6: Final answer
    x = 1,170,946.26

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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.