Home / 459,821.80-634,194.60-298,728.74

Finding the Fourth Proportional to 459,821.80, 634,194.60 and 298,728.74

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Solution

The fourth proportional to 459,821.80, 634,194.60 and 298,728.74 is: 412,012.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,821.80 : 634,194.60 = 298,728.74 : x
  2. Step 2: Convert to fraction form
    459,821.80/634,194.60 = 298,728.74/x
  3. Step 3: Cross multiply
    459,821.80x = 634,194.60 × 298,728.74
  4. Step 4: Simplify right side
    459,821.80x = 189,452,153,772.80
  5. Step 5: Solve for x
    x = 189,452,153,772.80/459,821.80
  6. Step 6: Final answer
    x = 412,012.12

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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.