Home / 425,348,530.40-638,022,795.60-272,167,551.20

Finding the Fourth Proportional to 425,348,530.40, 638,022,795.60 and 272,167,551.20

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Solution

The fourth proportional to 425,348,530.40, 638,022,795.60 and 272,167,551.20 is: 408,251,326.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,348,530.40 : 638,022,795.60 = 272,167,551.20 : x
  2. Step 2: Convert to fraction form
    425,348,530.40/638,022,795.60 = 272,167,551.20/x
  3. Step 3: Cross multiply
    425,348,530.40x = 638,022,795.60 × 272,167,551.20
  4. Step 4: Simplify right side
    425,348,530.40x = 173,649,101,888,230,144
  5. Step 5: Solve for x
    x = 173,649,101,888,230,144/425,348,530.40
  6. Step 6: Final answer
    x = 408,251,326.80

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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.