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Finding the Fourth Proportional to 643,296, 887,749.20 and 375,075.84

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Solution

The fourth proportional to 643,296, 887,749.20 and 375,075.84 is: 517,605.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,296 : 887,749.20 = 375,075.84 : x
  2. Step 2: Convert to fraction form
    643,296/887,749.20 = 375,075.84/x
  3. Step 3: Cross multiply
    643,296x = 887,749.20 × 375,075.84
  4. Step 4: Simplify right side
    643,296x = 332,973,276,899.33
  5. Step 5: Solve for x
    x = 332,973,276,899.33/643,296
  6. Step 6: Final answer
    x = 517,605.08

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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.