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Finding the Fourth Proportional to 577,510.61, 796,941.69 and 319,370.81

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Solution

The fourth proportional to 577,510.61, 796,941.69 and 319,370.81 is: 440,719.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,510.61 : 796,941.69 = 319,370.81 : x
  2. Step 2: Convert to fraction form
    577,510.61/796,941.69 = 319,370.81/x
  3. Step 3: Cross multiply
    577,510.61x = 796,941.69 × 319,370.81
  4. Step 4: Simplify right side
    577,510.61x = 254,519,913,058.07
  5. Step 5: Solve for x
    x = 254,519,913,058.07/577,510.61
  6. Step 6: Final answer
    x = 440,719.03

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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.