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Finding the Fourth Proportional to 525,940.80, 788,108.35 and 312,287.97

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Solution

The fourth proportional to 525,940.80, 788,108.35 and 312,287.97 is: 467,955.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,940.80 : 788,108.35 = 312,287.97 : x
  2. Step 2: Convert to fraction form
    525,940.80/788,108.35 = 312,287.97/x
  3. Step 3: Cross multiply
    525,940.80x = 788,108.35 × 312,287.97
  4. Step 4: Simplify right side
    525,940.80x = 246,116,756,761.55
  5. Step 5: Solve for x
    x = 246,116,756,761.55/525,940.80
  6. Step 6: Final answer
    x = 467,955.25

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.