Home / 643,400.10-965,714.55-550,011.30

Finding the Fourth Proportional to 643,400.10, 965,714.55 and 550,011.30

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Solution

The fourth proportional to 643,400.10, 965,714.55 and 550,011.30 is: 825,542.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,400.10 : 965,714.55 = 550,011.30 : x
  2. Step 2: Convert to fraction form
    643,400.10/965,714.55 = 550,011.30/x
  3. Step 3: Cross multiply
    643,400.10x = 965,714.55 × 550,011.30
  4. Step 4: Simplify right side
    643,400.10x = 531,153,915,074.42
  5. Step 5: Solve for x
    x = 531,153,915,074.42/643,400.10
  6. Step 6: Final answer
    x = 825,542.17

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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.