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Finding the Fourth Proportional to 1,355,773.87, 1,870,905.33 and 743,911.41

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Solution

The fourth proportional to 1,355,773.87, 1,870,905.33 and 743,911.41 is: 1,026,563.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,355,773.87 : 1,870,905.33 = 743,911.41 : x
  2. Step 2: Convert to fraction form
    1,355,773.87/1,870,905.33 = 743,911.41/x
  3. Step 3: Cross multiply
    1,355,773.87x = 1,870,905.33 × 743,911.41
  4. Step 4: Simplify right side
    1,355,773.87x = 1,391,787,829,032.71
  5. Step 5: Solve for x
    x = 1,391,787,829,032.71/1,355,773.87
  6. Step 6: Final answer
    x = 1,026,563.40

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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.