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Finding the Fourth Proportional to 512,590.80, 768,886.20 and 370,873.20

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Solution

The fourth proportional to 512,590.80, 768,886.20 and 370,873.20 is: 556,309.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,590.80 : 768,886.20 = 370,873.20 : x
  2. Step 2: Convert to fraction form
    512,590.80/768,886.20 = 370,873.20/x
  3. Step 3: Cross multiply
    512,590.80x = 768,886.20 × 370,873.20
  4. Step 4: Simplify right side
    512,590.80x = 285,159,285,429.84
  5. Step 5: Solve for x
    x = 285,159,285,429.84/512,590.80
  6. Step 6: Final answer
    x = 556,309.80

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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.