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Finding the Fourth Proportional to 561,706.94, 775,160.73 and 319,985.93

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Solution

The fourth proportional to 561,706.94, 775,160.73 and 319,985.93 is: 441,583.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,706.94 : 775,160.73 = 319,985.93 : x
  2. Step 2: Convert to fraction form
    561,706.94/775,160.73 = 319,985.93/x
  3. Step 3: Cross multiply
    561,706.94x = 775,160.73 × 319,985.93
  4. Step 4: Simplify right side
    561,706.94x = 248,040,523,212.73
  5. Step 5: Solve for x
    x = 248,040,523,212.73/561,706.94
  6. Step 6: Final answer
    x = 441,583.52

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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.