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Finding the Fourth Proportional to 565,108.28, 779,849.70 and 310,475.84

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Solution

The fourth proportional to 565,108.28, 779,849.70 and 310,475.84 is: 428,456.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    565,108.28 : 779,849.70 = 310,475.84 : x
  2. Step 2: Convert to fraction form
    565,108.28/779,849.70 = 310,475.84/x
  3. Step 3: Cross multiply
    565,108.28x = 779,849.70 × 310,475.84
  4. Step 4: Simplify right side
    565,108.28x = 242,124,490,681.25
  5. Step 5: Solve for x
    x = 242,124,490,681.25/565,108.28
  6. Step 6: Final answer
    x = 428,456.81

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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.