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Finding the Fourth Proportional to 573,729.78, 791,775.09 and 319,075.50

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Solution

The fourth proportional to 573,729.78, 791,775.09 and 319,075.50 is: 440,339.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,729.78 : 791,775.09 = 319,075.50 : x
  2. Step 2: Convert to fraction form
    573,729.78/791,775.09 = 319,075.50/x
  3. Step 3: Cross multiply
    573,729.78x = 791,775.09 × 319,075.50
  4. Step 4: Simplify right side
    573,729.78x = 252,636,032,729.30
  5. Step 5: Solve for x
    x = 252,636,032,729.30/573,729.78
  6. Step 6: Final answer
    x = 440,339.76

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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.