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Finding the Fourth Proportional to 510,218.69, 703,866.20 and 328,988.82

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Solution

The fourth proportional to 510,218.69, 703,866.20 and 328,988.82 is: 453,852.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    510,218.69 : 703,866.20 = 328,988.82 : x
  2. Step 2: Convert to fraction form
    510,218.69/703,866.20 = 328,988.82/x
  3. Step 3: Cross multiply
    510,218.69x = 703,866.20 × 328,988.82
  4. Step 4: Simplify right side
    510,218.69x = 231,564,108,930.94
  5. Step 5: Solve for x
    x = 231,564,108,930.94/510,218.69
  6. Step 6: Final answer
    x = 453,852.66

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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.