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Finding the Fourth Proportional to 565,185.36, 779,955.72 and 310,528.08

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Solution

The fourth proportional to 565,185.36, 779,955.72 and 310,528.08 is: 428,528.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    565,185.36 : 779,955.72 = 310,528.08 : x
  2. Step 2: Convert to fraction form
    565,185.36/779,955.72 = 310,528.08/x
  3. Step 3: Cross multiply
    565,185.36x = 779,955.72 × 310,528.08
  4. Step 4: Simplify right side
    565,185.36x = 242,198,152,216.62
  5. Step 5: Solve for x
    x = 242,198,152,216.62/565,185.36
  6. Step 6: Final answer
    x = 428,528.71

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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.