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Finding the Fourth Proportional to 550,729.68, 759,960.36 and 308,979.60

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Solution

The fourth proportional to 550,729.68, 759,960.36 and 308,979.60 is: 426,365.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,729.68 : 759,960.36 = 308,979.60 : x
  2. Step 2: Convert to fraction form
    550,729.68/759,960.36 = 308,979.60/x
  3. Step 3: Cross multiply
    550,729.68x = 759,960.36 × 308,979.60
  4. Step 4: Simplify right side
    550,729.68x = 234,812,248,048.66
  5. Step 5: Solve for x
    x = 234,812,248,048.66/550,729.68
  6. Step 6: Final answer
    x = 426,365.70

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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.