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Finding the Fourth Proportional to 577,488.39, 796,911.12 and 319,348.58

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Solution

The fourth proportional to 577,488.39, 796,911.12 and 319,348.58 is: 440,688.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,488.39 : 796,911.12 = 319,348.58 : x
  2. Step 2: Convert to fraction form
    577,488.39/796,911.12 = 319,348.58/x
  3. Step 3: Cross multiply
    577,488.39x = 796,911.12 × 319,348.58
  4. Step 4: Simplify right side
    577,488.39x = 254,492,434,558.21
  5. Step 5: Solve for x
    x = 254,492,434,558.21/577,488.39
  6. Step 6: Final answer
    x = 440,688.40

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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.