Home / 763,730.57-1,145,743.38-290,379.13

Finding the Fourth Proportional to 763,730.57, 1,145,743.38 and 290,379.13

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Solution

The fourth proportional to 763,730.57, 1,145,743.38 and 290,379.13 is: 435,624.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    763,730.57 : 1,145,743.38 = 290,379.13 : x
  2. Step 2: Convert to fraction form
    763,730.57/1,145,743.38 = 290,379.13/x
  3. Step 3: Cross multiply
    763,730.57x = 1,145,743.38 × 290,379.13
  4. Step 4: Simplify right side
    763,730.57x = 332,699,963,023.30
  5. Step 5: Solve for x
    x = 332,699,963,023.30/763,730.57
  6. Step 6: Final answer
    x = 435,624.78

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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.