Home / 426,199,938.32-639,317,844.24-135,078,548.48

Finding the Fourth Proportional to 426,199,938.32, 639,317,844.24 and 135,078,548.48

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Solution

The fourth proportional to 426,199,938.32, 639,317,844.24 and 135,078,548.48 is: 202,623,507.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,199,938.32 : 639,317,844.24 = 135,078,548.48 : x
  2. Step 2: Convert to fraction form
    426,199,938.32/639,317,844.24 = 135,078,548.48/x
  3. Step 3: Cross multiply
    426,199,938.32x = 639,317,844.24 × 135,078,548.48
  4. Step 4: Simplify right side
    426,199,938.32x = 86,358,126,417,301,920
  5. Step 5: Solve for x
    x = 86,358,126,417,301,920/426,199,938.32
  6. Step 6: Final answer
    x = 202,623,507.54

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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.