Home / 459,570.20-689,355.30-408,831.80

Finding the Fourth Proportional to 459,570.20, 689,355.30 and 408,831.80

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Solution

The fourth proportional to 459,570.20, 689,355.30 and 408,831.80 is: 613,247.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,570.20 : 689,355.30 = 408,831.80 : x
  2. Step 2: Convert to fraction form
    459,570.20/689,355.30 = 408,831.80/x
  3. Step 3: Cross multiply
    459,570.20x = 689,355.30 × 408,831.80
  4. Step 4: Simplify right side
    459,570.20x = 281,830,368,138.54
  5. Step 5: Solve for x
    x = 281,830,368,138.54/459,570.20
  6. Step 6: Final answer
    x = 613,247.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.