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Finding the Fourth Proportional to 559,770.75, 772,483.82 and 318,053.66

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Solution

The fourth proportional to 559,770.75, 772,483.82 and 318,053.66 is: 438,914.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,770.75 : 772,483.82 = 318,053.66 : x
  2. Step 2: Convert to fraction form
    559,770.75/772,483.82 = 318,053.66/x
  3. Step 3: Cross multiply
    559,770.75x = 772,483.82 × 318,053.66
  4. Step 4: Simplify right side
    559,770.75x = 245,691,300,789.09
  5. Step 5: Solve for x
    x = 245,691,300,789.09/559,770.75
  6. Step 6: Final answer
    x = 438,914.15

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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.