Home / 782,388.48-1,079,722.68-438,239.19

Finding the Fourth Proportional to 782,388.48, 1,079,722.68 and 438,239.19

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Solution

The fourth proportional to 782,388.48, 1,079,722.68 and 438,239.19 is: 604,784.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    782,388.48 : 1,079,722.68 = 438,239.19 : x
  2. Step 2: Convert to fraction form
    782,388.48/1,079,722.68 = 438,239.19/x
  3. Step 3: Cross multiply
    782,388.48x = 1,079,722.68 × 438,239.19
  4. Step 4: Simplify right side
    782,388.48x = 473,176,792,707.83
  5. Step 5: Solve for x
    x = 473,176,792,707.83/782,388.48
  6. Step 6: Final answer
    x = 604,784.97

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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.