Home / 689,739.86-951,831.84-387,933.86

Finding the Fourth Proportional to 689,739.86, 951,831.84 and 387,933.86

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Solution

The fourth proportional to 689,739.86, 951,831.84 and 387,933.86 is: 535,343.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,739.86 : 951,831.84 = 387,933.86 : x
  2. Step 2: Convert to fraction form
    689,739.86/951,831.84 = 387,933.86/x
  3. Step 3: Cross multiply
    689,739.86x = 951,831.84 × 387,933.86
  4. Step 4: Simplify right side
    689,739.86x = 369,247,799,762.10
  5. Step 5: Solve for x
    x = 369,247,799,762.10/689,739.86
  6. Step 6: Final answer
    x = 535,343.57

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1.5x scale

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.