Home / 1,221,821.20-1,833,606.60-512,358.40

Finding the Fourth Proportional to 1,221,821.20, 1,833,606.60 and 512,358.40

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Solution

The fourth proportional to 1,221,821.20, 1,833,606.60 and 512,358.40 is: 768,904.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,821.20 : 1,833,606.60 = 512,358.40 : x
  2. Step 2: Convert to fraction form
    1,221,821.20/1,833,606.60 = 512,358.40/x
  3. Step 3: Cross multiply
    1,221,821.20x = 1,833,606.60 × 512,358.40
  4. Step 4: Simplify right side
    1,221,821.20x = 939,463,743,805.44
  5. Step 5: Solve for x
    x = 939,463,743,805.44/1,221,821.20
  6. Step 6: Final answer
    x = 768,904.44

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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.