Home / 420,043,076.02-579,659,549.97-231,871,479.22

Finding the Fourth Proportional to 420,043,076.02, 579,659,549.97 and 231,871,479.22

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Solution

The fourth proportional to 420,043,076.02, 579,659,549.97 and 231,871,479.22 is: 319,982,699.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,043,076.02 : 579,659,549.97 = 231,871,479.22 : x
  2. Step 2: Convert to fraction form
    420,043,076.02/579,659,549.97 = 231,871,479.22/x
  3. Step 3: Cross multiply
    420,043,076.02x = 579,659,549.97 × 231,871,479.22
  4. Step 4: Simplify right side
    420,043,076.02x = 134,406,517,295,543,408
  5. Step 5: Solve for x
    x = 134,406,517,295,543,408/420,043,076.02
  6. Step 6: Final answer
    x = 319,982,699.32

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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.