Home / 687,289,187.48-948,490,311.06-405,043,540.52

Finding the Fourth Proportional to 687,289,187.48, 948,490,311.06 and 405,043,540.52

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Solution

The fourth proportional to 687,289,187.48, 948,490,311.06 and 405,043,540.52 is: 558,978,492.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,289,187.48 : 948,490,311.06 = 405,043,540.52 : x
  2. Step 2: Convert to fraction form
    687,289,187.48/948,490,311.06 = 405,043,540.52/x
  3. Step 3: Cross multiply
    687,289,187.48x = 948,490,311.06 × 405,043,540.52
  4. Step 4: Simplify right side
    687,289,187.48x = 384,179,873,741,246,528
  5. Step 5: Solve for x
    x = 384,179,873,741,246,528/687,289,187.48
  6. Step 6: Final answer
    x = 558,978,492.23

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.