Home / 426,677.15-640,015.53-127,150.09

Finding the Fourth Proportional to 426,677.15, 640,015.53 and 127,150.09

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Solution

The fourth proportional to 426,677.15, 640,015.53 and 127,150.09 is: 190,725.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,677.15 : 640,015.53 = 127,150.09 : x
  2. Step 2: Convert to fraction form
    426,677.15/640,015.53 = 127,150.09/x
  3. Step 3: Cross multiply
    426,677.15x = 640,015.53 × 127,150.09
  4. Step 4: Simplify right side
    426,677.15x = 81,378,030,164.05
  5. Step 5: Solve for x
    x = 81,378,030,164.05/426,677.15
  6. Step 6: Final answer
    x = 190,725.07

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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.