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Finding the Fourth Proportional to 1,312,403.04, 1,811,115.80 and 708,791.04

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Solution

The fourth proportional to 1,312,403.04, 1,811,115.80 and 708,791.04 is: 978,131.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,312,403.04 : 1,811,115.80 = 708,791.04 : x
  2. Step 2: Convert to fraction form
    1,312,403.04/1,811,115.80 = 708,791.04/x
  3. Step 3: Cross multiply
    1,312,403.04x = 1,811,115.80 × 708,791.04
  4. Step 4: Simplify right side
    1,312,403.04x = 1,283,702,651,442.43
  5. Step 5: Solve for x
    x = 1,283,702,651,442.43/1,312,403.04
  6. Step 6: Final answer
    x = 978,131.42

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.