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Finding the Fourth Proportional to 512,545.80, 768,818.70 and 370,828.20

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Solution

The fourth proportional to 512,545.80, 768,818.70 and 370,828.20 is: 556,242.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,545.80 : 768,818.70 = 370,828.20 : x
  2. Step 2: Convert to fraction form
    512,545.80/768,818.70 = 370,828.20/x
  3. Step 3: Cross multiply
    512,545.80x = 768,818.70 × 370,828.20
  4. Step 4: Simplify right side
    512,545.80x = 285,099,654,647.34
  5. Step 5: Solve for x
    x = 285,099,654,647.34/512,545.80
  6. Step 6: Final answer
    x = 556,242.30

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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.