Home / 449,116.72-619,633.87-320,075.51

Finding the Fourth Proportional to 449,116.72, 619,633.87 and 320,075.51

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Solution

The fourth proportional to 449,116.72, 619,633.87 and 320,075.51 is: 441,599.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,116.72 : 619,633.87 = 320,075.51 : x
  2. Step 2: Convert to fraction form
    449,116.72/619,633.87 = 320,075.51/x
  3. Step 3: Cross multiply
    449,116.72x = 619,633.87 × 320,075.51
  4. Step 4: Simplify right side
    449,116.72x = 198,329,626,953.52
  5. Step 5: Solve for x
    x = 198,329,626,953.52/449,116.72
  6. Step 6: Final answer
    x = 441,599.30

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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.