Home / 420,043,074.65-579,659,548.07-231,871,477.85

Finding the Fourth Proportional to 420,043,074.65, 579,659,548.07 and 231,871,477.85

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Solution

The fourth proportional to 420,043,074.65, 579,659,548.07 and 231,871,477.85 is: 319,982,697.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,043,074.65 : 579,659,548.07 = 231,871,477.85 : x
  2. Step 2: Convert to fraction form
    420,043,074.65/579,659,548.07 = 231,871,477.85/x
  3. Step 3: Cross multiply
    420,043,074.65x = 579,659,548.07 × 231,871,477.85
  4. Step 4: Simplify right side
    420,043,074.65x = 134,406,516,058,535,392
  5. Step 5: Solve for x
    x = 134,406,516,058,535,392/420,043,074.65
  6. Step 6: Final answer
    x = 319,982,697.42

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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.