Home / 1,328,538.84-1,993,124.46-429,980.58

Finding the Fourth Proportional to 1,328,538.84, 1,993,124.46 and 429,980.58

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Solution

The fourth proportional to 1,328,538.84, 1,993,124.46 and 429,980.58 is: 645,073.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,328,538.84 : 1,993,124.46 = 429,980.58 : x
  2. Step 2: Convert to fraction form
    1,328,538.84/1,993,124.46 = 429,980.58/x
  3. Step 3: Cross multiply
    1,328,538.84x = 1,993,124.46 × 429,980.58
  4. Step 4: Simplify right side
    1,328,538.84x = 857,004,811,322.99
  5. Step 5: Solve for x
    x = 857,004,811,322.99/1,328,538.84
  6. Step 6: Final answer
    x = 645,073.21

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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.