Home / 768,425.72-1,060,329.66-428,908.28

Finding the Fourth Proportional to 768,425.72, 1,060,329.66 and 428,908.28

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Solution

The fourth proportional to 768,425.72, 1,060,329.66 and 428,908.28 is: 591,838.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,425.72 : 1,060,329.66 = 428,908.28 : x
  2. Step 2: Convert to fraction form
    768,425.72/1,060,329.66 = 428,908.28/x
  3. Step 3: Cross multiply
    768,425.72x = 1,060,329.66 × 428,908.28
  4. Step 4: Simplify right side
    768,425.72x = 454,784,170,703.59
  5. Step 5: Solve for x
    x = 454,784,170,703.59/768,425.72
  6. Step 6: Final answer
    x = 591,838.82

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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.