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Finding the Fourth Proportional to 470,299.98, 648,658.35 and 326,988.30

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Solution

The fourth proportional to 470,299.98, 648,658.35 and 326,988.30 is: 450,996.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    470,299.98 : 648,658.35 = 326,988.30 : x
  2. Step 2: Convert to fraction form
    470,299.98/648,658.35 = 326,988.30/x
  3. Step 3: Cross multiply
    470,299.98x = 648,658.35 × 326,988.30
  4. Step 4: Simplify right side
    470,299.98x = 212,103,691,147.31
  5. Step 5: Solve for x
    x = 212,103,691,147.31/470,299.98
  6. Step 6: Final answer
    x = 450,996.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.