Home / 765,931.07-1,056,975.98-421,759.86

Finding the Fourth Proportional to 765,931.07, 1,056,975.98 and 421,759.86

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Solution

The fourth proportional to 765,931.07, 1,056,975.98 and 421,759.86 is: 582,023.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    765,931.07 : 1,056,975.98 = 421,759.86 : x
  2. Step 2: Convert to fraction form
    765,931.07/1,056,975.98 = 421,759.86/x
  3. Step 3: Cross multiply
    765,931.07x = 1,056,975.98 × 421,759.86
  4. Step 4: Simplify right side
    765,931.07x = 445,790,039,239.36
  5. Step 5: Solve for x
    x = 445,790,039,239.36/765,931.07
  6. Step 6: Final answer
    x = 582,023.71

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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.