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Finding the Fourth Proportional to 552,658.20, 828,987.30 and 300,715.80

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Solution

The fourth proportional to 552,658.20, 828,987.30 and 300,715.80 is: 451,073.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    552,658.20 : 828,987.30 = 300,715.80 : x
  2. Step 2: Convert to fraction form
    552,658.20/828,987.30 = 300,715.80/x
  3. Step 3: Cross multiply
    552,658.20x = 828,987.30 × 300,715.80
  4. Step 4: Simplify right side
    552,658.20x = 249,289,579,109.34
  5. Step 5: Solve for x
    x = 249,289,579,109.34/552,658.20
  6. Step 6: Final answer
    x = 451,073.70

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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.