Home / 1,328,539.22-1,993,125.03-429,980.96

Finding the Fourth Proportional to 1,328,539.22, 1,993,125.03 and 429,980.96

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Solution

The fourth proportional to 1,328,539.22, 1,993,125.03 and 429,980.96 is: 645,073.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,328,539.22 : 1,993,125.03 = 429,980.96 : x
  2. Step 2: Convert to fraction form
    1,328,539.22/1,993,125.03 = 429,980.96/x
  3. Step 3: Cross multiply
    1,328,539.22x = 1,993,125.03 × 429,980.96
  4. Step 4: Simplify right side
    1,328,539.22x = 857,005,803,833.80
  5. Step 5: Solve for x
    x = 857,005,803,833.80/1,328,539.22
  6. Step 6: Final answer
    x = 645,073.77

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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.