Home / 386,129,200.80-579,193,801.20-347,162,109.60

Finding the Fourth Proportional to 386,129,200.80, 579,193,801.20 and 347,162,109.60

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Solution

The fourth proportional to 386,129,200.80, 579,193,801.20 and 347,162,109.60 is: 520,743,164.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,129,200.80 : 579,193,801.20 = 347,162,109.60 : x
  2. Step 2: Convert to fraction form
    386,129,200.80/579,193,801.20 = 347,162,109.60/x
  3. Step 3: Cross multiply
    386,129,200.80x = 579,193,801.20 × 347,162,109.60
  4. Step 4: Simplify right side
    386,129,200.80x = 201,074,141,891,835,040
  5. Step 5: Solve for x
    x = 201,074,141,891,835,040/386,129,200.80
  6. Step 6: Final answer
    x = 520,743,164.40

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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.