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Finding the Fourth Proportional to 869,441.90, 1,302,607.65 and 745,025.90

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Solution

The fourth proportional to 869,441.90, 1,302,607.65 and 745,025.90 is: 1,116,206.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    869,441.90 : 1,302,607.65 = 745,025.90 : x
  2. Step 2: Convert to fraction form
    869,441.90/1,302,607.65 = 745,025.90/x
  3. Step 3: Cross multiply
    869,441.90x = 1,302,607.65 × 745,025.90
  4. Step 4: Simplify right side
    869,441.90x = 970,476,436,788.14
  5. Step 5: Solve for x
    x = 970,476,436,788.14/869,441.90
  6. Step 6: Final answer
    x = 1,116,206.20

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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.