Home / 761,631-1,051,050.78-422,121.12

Finding the Fourth Proportional to 761,631, 1,051,050.78 and 422,121.12

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Solution

The fourth proportional to 761,631, 1,051,050.78 and 422,121.12 is: 582,527.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    761,631 : 1,051,050.78 = 422,121.12 : x
  2. Step 2: Convert to fraction form
    761,631/1,051,050.78 = 422,121.12/x
  3. Step 3: Cross multiply
    761,631x = 1,051,050.78 × 422,121.12
  4. Step 4: Simplify right side
    761,631x = 443,670,732,430.47
  5. Step 5: Solve for x
    x = 443,670,732,430.47/761,631
  6. Step 6: Final answer
    x = 582,527.15

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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.