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Finding the Fourth Proportional to 565,191.72, 779,963.94 and 310,542.28

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Solution

The fourth proportional to 565,191.72, 779,963.94 and 310,542.28 is: 428,548.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    565,191.72 : 779,963.94 = 310,542.28 : x
  2. Step 2: Convert to fraction form
    565,191.72/779,963.94 = 310,542.28/x
  3. Step 3: Cross multiply
    565,191.72x = 779,963.94 × 310,542.28
  4. Step 4: Simplify right side
    565,191.72x = 242,211,780,245.38
  5. Step 5: Solve for x
    x = 242,211,780,245.38/565,191.72
  6. Step 6: Final answer
    x = 428,548.00

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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.