Home / 459,939.60-689,909.40-122,979.60

Finding the Fourth Proportional to 459,939.60, 689,909.40 and 122,979.60

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Solution

The fourth proportional to 459,939.60, 689,909.40 and 122,979.60 is: 184,469.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,939.60 : 689,909.40 = 122,979.60 : x
  2. Step 2: Convert to fraction form
    459,939.60/689,909.40 = 122,979.60/x
  3. Step 3: Cross multiply
    459,939.60x = 689,909.40 × 122,979.60
  4. Step 4: Simplify right side
    459,939.60x = 84,844,782,048.24
  5. Step 5: Solve for x
    x = 84,844,782,048.24/459,939.60
  6. Step 6: Final answer
    x = 184,469.40

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Similar ratio
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1.5x scale

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.