Home / 768,122.51-1,060,008.26-428,590.76

Finding the Fourth Proportional to 768,122.51, 1,060,008.26 and 428,590.76

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Solution

The fourth proportional to 768,122.51, 1,060,008.26 and 428,590.76 is: 591,454.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,122.51 : 1,060,008.26 = 428,590.76 : x
  2. Step 2: Convert to fraction form
    768,122.51/1,060,008.26 = 428,590.76/x
  3. Step 3: Cross multiply
    768,122.51x = 1,060,008.26 × 428,590.76
  4. Step 4: Simplify right side
    768,122.51x = 454,309,738,316.68
  5. Step 5: Solve for x
    x = 454,309,738,316.68/768,122.51
  6. Step 6: Final answer
    x = 591,454.79

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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.