Home / 1,242,537.12-1,861,369.88-643,890.96

Finding the Fourth Proportional to 1,242,537.12, 1,861,369.88 and 643,890.96

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Solution

The fourth proportional to 1,242,537.12, 1,861,369.88 and 643,890.96 is: 964,574.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,242,537.12 : 1,861,369.88 = 643,890.96 : x
  2. Step 2: Convert to fraction form
    1,242,537.12/1,861,369.88 = 643,890.96/x
  3. Step 3: Cross multiply
    1,242,537.12x = 1,861,369.88 × 643,890.96
  4. Step 4: Simplify right side
    1,242,537.12x = 1,198,519,238,948.28
  5. Step 5: Solve for x
    x = 1,198,519,238,948.28/1,242,537.12
  6. Step 6: Final answer
    x = 964,574.19

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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.