Home / 1,296,431.60-1,788,861.64-723,470.40

Finding the Fourth Proportional to 1,296,431.60, 1,788,861.64 and 723,470.40

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Solution

The fourth proportional to 1,296,431.60, 1,788,861.64 and 723,470.40 is: 998,269.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,296,431.60 : 1,788,861.64 = 723,470.40 : x
  2. Step 2: Convert to fraction form
    1,296,431.60/1,788,861.64 = 723,470.40/x
  3. Step 3: Cross multiply
    1,296,431.60x = 1,788,861.64 × 723,470.40
  4. Step 4: Simplify right side
    1,296,431.60x = 1,294,188,446,235.46
  5. Step 5: Solve for x
    x = 1,294,188,446,235.46/1,296,431.60
  6. Step 6: Final answer
    x = 998,269.75

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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.