Home / 1,297,743.30-1,790,708.85-724,710.42

Finding the Fourth Proportional to 1,297,743.30, 1,790,708.85 and 724,710.42

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Solution

The fourth proportional to 1,297,743.30, 1,790,708.85 and 724,710.42 is: 1,000,001.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,297,743.30 : 1,790,708.85 = 724,710.42 : x
  2. Step 2: Convert to fraction form
    1,297,743.30/1,790,708.85 = 724,710.42/x
  3. Step 3: Cross multiply
    1,297,743.30x = 1,790,708.85 × 724,710.42
  4. Step 4: Simplify right side
    1,297,743.30x = 1,297,745,362,781.22
  5. Step 5: Solve for x
    x = 1,297,745,362,781.22/1,297,743.30
  6. Step 6: Final answer
    x = 1,000,001.59

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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.