Home / 1,329,421.45-1,993,713.90-430,654.66

Finding the Fourth Proportional to 1,329,421.45, 1,993,713.90 and 430,654.66

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Solution

The fourth proportional to 1,329,421.45, 1,993,713.90 and 430,654.66 is: 645,846.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,329,421.45 : 1,993,713.90 = 430,654.66 : x
  2. Step 2: Convert to fraction form
    1,329,421.45/1,993,713.90 = 430,654.66/x
  3. Step 3: Cross multiply
    1,329,421.45x = 1,993,713.90 × 430,654.66
  4. Step 4: Simplify right side
    1,329,421.45x = 858,602,171,773.21
  5. Step 5: Solve for x
    x = 858,602,171,773.21/1,329,421.45
  6. Step 6: Final answer
    x = 645,846.49

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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.