Home / 1,329,638.80-1,994,474.40-431,073.40

Finding the Fourth Proportional to 1,329,638.80, 1,994,474.40 and 431,073.40

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Solution

The fourth proportional to 1,329,638.80, 1,994,474.40 and 431,073.40 is: 646,615.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,329,638.80 : 1,994,474.40 = 431,073.40 : x
  2. Step 2: Convert to fraction form
    1,329,638.80/1,994,474.40 = 431,073.40/x
  3. Step 3: Cross multiply
    1,329,638.80x = 1,994,474.40 × 431,073.40
  4. Step 4: Simplify right side
    1,329,638.80x = 859,764,860,820.96
  5. Step 5: Solve for x
    x = 859,764,860,820.96/1,329,638.80
  6. Step 6: Final answer
    x = 646,615.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.