Home / 499,582.13-689,381.66-281,778.80

Finding the Fourth Proportional to 499,582.13, 689,381.66 and 281,778.80

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Solution

The fourth proportional to 499,582.13, 689,381.66 and 281,778.80 is: 388,831.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,582.13 : 689,381.66 = 281,778.80 : x
  2. Step 2: Convert to fraction form
    499,582.13/689,381.66 = 281,778.80/x
  3. Step 3: Cross multiply
    499,582.13x = 689,381.66 × 281,778.80
  4. Step 4: Simplify right side
    499,582.13x = 194,253,134,154.35
  5. Step 5: Solve for x
    x = 194,253,134,154.35/499,582.13
  6. Step 6: Final answer
    x = 388,831.23

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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.