Home / 426,027.36-638,931.36-126,437.04

Finding the Fourth Proportional to 426,027.36, 638,931.36 and 126,437.04

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Solution

The fourth proportional to 426,027.36, 638,931.36 and 126,437.04 is: 189,623.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,027.36 : 638,931.36 = 126,437.04 : x
  2. Step 2: Convert to fraction form
    426,027.36/638,931.36 = 126,437.04/x
  3. Step 3: Cross multiply
    426,027.36x = 638,931.36 × 126,437.04
  4. Step 4: Simplify right side
    426,027.36x = 80,784,589,921.57
  5. Step 5: Solve for x
    x = 80,784,589,921.57/426,027.36
  6. Step 6: Final answer
    x = 189,623.01

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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.