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Finding the Fourth Proportional to 577,385.21, 796,759.34 and 319,247.22

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Solution

The fourth proportional to 577,385.21, 796,759.34 and 319,247.22 is: 440,543.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,385.21 : 796,759.34 = 319,247.22 : x
  2. Step 2: Convert to fraction form
    577,385.21/796,759.34 = 319,247.22/x
  3. Step 3: Cross multiply
    577,385.21x = 796,759.34 × 319,247.22
  4. Step 4: Simplify right side
    577,385.21x = 254,363,205,695.65
  5. Step 5: Solve for x
    x = 254,363,205,695.65/577,385.21
  6. Step 6: Final answer
    x = 440,543.33

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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.