Home / 1,296,985.14-1,789,809.75-724,078.62

Finding the Fourth Proportional to 1,296,985.14, 1,789,809.75 and 724,078.62

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Solution

The fourth proportional to 1,296,985.14, 1,789,809.75 and 724,078.62 is: 999,211.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,296,985.14 : 1,789,809.75 = 724,078.62 : x
  2. Step 2: Convert to fraction form
    1,296,985.14/1,789,809.75 = 724,078.62/x
  3. Step 3: Cross multiply
    1,296,985.14x = 1,789,809.75 × 724,078.62
  4. Step 4: Simplify right side
    1,296,985.14x = 1,295,962,973,842.55
  5. Step 5: Solve for x
    x = 1,295,962,973,842.55/1,296,985.14
  6. Step 6: Final answer
    x = 999,211.89

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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.