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Finding the Fourth Proportional to 550,333.12, 759,468 and 320,884.16

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Solution

The fourth proportional to 550,333.12, 759,468 and 320,884.16 is: 442,824.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,333.12 : 759,468 = 320,884.16 : x
  2. Step 2: Convert to fraction form
    550,333.12/759,468 = 320,884.16/x
  3. Step 3: Cross multiply
    550,333.12x = 759,468 × 320,884.16
  4. Step 4: Simplify right side
    550,333.12x = 243,701,251,226.88
  5. Step 5: Solve for x
    x = 243,701,251,226.88/550,333.12
  6. Step 6: Final answer
    x = 442,824.98

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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.