Home / 379,315,390.68-523,539,448.86-230,604,912.72

Finding the Fourth Proportional to 379,315,390.68, 523,539,448.86 and 230,604,912.72

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Solution

The fourth proportional to 379,315,390.68, 523,539,448.86 and 230,604,912.72 is: 318,285,974.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,315,390.68 : 523,539,448.86 = 230,604,912.72 : x
  2. Step 2: Convert to fraction form
    379,315,390.68/523,539,448.86 = 230,604,912.72/x
  3. Step 3: Cross multiply
    379,315,390.68x = 523,539,448.86 × 230,604,912.72
  4. Step 4: Simplify right side
    379,315,390.68x = 120,730,768,909,837,200
  5. Step 5: Solve for x
    x = 120,730,768,909,837,200/379,315,390.68
  6. Step 6: Final answer
    x = 318,285,974.88

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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.