Home / 689,738.86-951,830.46-387,932.86

Finding the Fourth Proportional to 689,738.86, 951,830.46 and 387,932.86

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Solution

The fourth proportional to 689,738.86, 951,830.46 and 387,932.86 is: 535,342.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,738.86 : 951,830.46 = 387,932.86 : x
  2. Step 2: Convert to fraction form
    689,738.86/951,830.46 = 387,932.86/x
  3. Step 3: Cross multiply
    689,738.86x = 951,830.46 × 387,932.86
  4. Step 4: Simplify right side
    689,738.86x = 369,246,312,582.92
  5. Step 5: Solve for x
    x = 369,246,312,582.92/689,738.86
  6. Step 6: Final answer
    x = 535,342.19

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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.