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Finding the Fourth Proportional to 520,033.20, 778,494.60 and 309,562.80

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Solution

The fourth proportional to 520,033.20, 778,494.60 and 309,562.80 is: 463,418.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,033.20 : 778,494.60 = 309,562.80 : x
  2. Step 2: Convert to fraction form
    520,033.20/778,494.60 = 309,562.80/x
  3. Step 3: Cross multiply
    520,033.20x = 778,494.60 × 309,562.80
  4. Step 4: Simplify right side
    520,033.20x = 240,992,968,160.88
  5. Step 5: Solve for x
    x = 240,992,968,160.88/520,033.20
  6. Step 6: Final answer
    x = 463,418.43

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1.5x scale

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.