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Finding the Fourth Proportional to 577,389.93, 796,728.56 and 319,232

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Solution

The fourth proportional to 577,389.93, 796,728.56 and 319,232 is: 440,501.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,389.93 : 796,728.56 = 319,232 : x
  2. Step 2: Convert to fraction form
    577,389.93/796,728.56 = 319,232/x
  3. Step 3: Cross multiply
    577,389.93x = 796,728.56 × 319,232
  4. Step 4: Simplify right side
    577,389.93x = 254,341,250,069.76
  5. Step 5: Solve for x
    x = 254,341,250,069.76/577,389.93
  6. Step 6: Final answer
    x = 440,501.71

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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.