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Finding the Fourth Proportional to 577,071.68, 796,400.14 and 318,943.07

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Solution

The fourth proportional to 577,071.68, 796,400.14 and 318,943.07 is: 440,164.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,071.68 : 796,400.14 = 318,943.07 : x
  2. Step 2: Convert to fraction form
    577,071.68/796,400.14 = 318,943.07/x
  3. Step 3: Cross multiply
    577,071.68x = 796,400.14 × 318,943.07
  4. Step 4: Simplify right side
    577,071.68x = 254,006,300,820.67
  5. Step 5: Solve for x
    x = 254,006,300,820.67/577,071.68
  6. Step 6: Final answer
    x = 440,164.21

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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.