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Finding the Fourth Proportional to 577,393.20, 796,770.40 and 319,255.20

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Solution

The fourth proportional to 577,393.20, 796,770.40 and 319,255.20 is: 440,554.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,393.20 : 796,770.40 = 319,255.20 : x
  2. Step 2: Convert to fraction form
    577,393.20/796,770.40 = 319,255.20/x
  3. Step 3: Cross multiply
    577,393.20x = 796,770.40 × 319,255.20
  4. Step 4: Simplify right side
    577,393.20x = 254,373,093,406.08
  5. Step 5: Solve for x
    x = 254,373,093,406.08/577,393.20
  6. Step 6: Final answer
    x = 440,554.36

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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.