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Finding the Fourth Proportional to 1,317,354.12, 1,817,948.88 and 713,742.12

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Solution

The fourth proportional to 1,317,354.12, 1,817,948.88 and 713,742.12 is: 984,964.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,317,354.12 : 1,817,948.88 = 713,742.12 : x
  2. Step 2: Convert to fraction form
    1,317,354.12/1,817,948.88 = 713,742.12/x
  3. Step 3: Cross multiply
    1,317,354.12x = 1,817,948.88 × 713,742.12
  4. Step 4: Simplify right side
    1,317,354.12x = 1,297,546,687,662.83
  5. Step 5: Solve for x
    x = 1,297,546,687,662.83/1,317,354.12
  6. Step 6: Final answer
    x = 984,964.23

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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.