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Finding the Fourth Proportional to 577,345.91, 796,705.22 and 319,207.93

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Solution

The fourth proportional to 577,345.91, 796,705.22 and 319,207.93 is: 440,489.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,345.91 : 796,705.22 = 319,207.93 : x
  2. Step 2: Convert to fraction form
    577,345.91/796,705.22 = 319,207.93/x
  3. Step 3: Cross multiply
    577,345.91x = 796,705.22 × 319,207.93
  4. Step 4: Simplify right side
    577,345.91x = 254,314,622,902.65
  5. Step 5: Solve for x
    x = 254,314,622,902.65/577,345.91
  6. Step 6: Final answer
    x = 440,489.18

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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.