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Finding the Fourth Proportional to 868,709.40, 1,301,508.90 and 744,293.40

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Solution

The fourth proportional to 868,709.40, 1,301,508.90 and 744,293.40 is: 1,115,107.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    868,709.40 : 1,301,508.90 = 744,293.40 : x
  2. Step 2: Convert to fraction form
    868,709.40/1,301,508.90 = 744,293.40/x
  3. Step 3: Cross multiply
    868,709.40x = 1,301,508.90 × 744,293.40
  4. Step 4: Simplify right side
    868,709.40x = 968,704,484,311.26
  5. Step 5: Solve for x
    x = 968,704,484,311.26/868,709.40
  6. Step 6: Final answer
    x = 1,115,107.63

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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.