Home / 420,345,211.24-630,577,988.52-129,236,773.51

Finding the Fourth Proportional to 420,345,211.24, 630,577,988.52 and 129,236,773.51

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Solution

The fourth proportional to 420,345,211.24, 630,577,988.52 and 129,236,773.51 is: 193,873,660.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,345,211.24 : 630,577,988.52 = 129,236,773.51 : x
  2. Step 2: Convert to fraction form
    420,345,211.24/630,577,988.52 = 129,236,773.51/x
  3. Step 3: Cross multiply
    420,345,211.24x = 630,577,988.52 × 129,236,773.51
  4. Step 4: Simplify right side
    420,345,211.24x = 81,493,864,682,750,624
  5. Step 5: Solve for x
    x = 81,493,864,682,750,624/420,345,211.24
  6. Step 6: Final answer
    x = 193,873,660.28

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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.