Home / 487,138,217.40-730,707,326.10-438,765,276.60

Finding the Fourth Proportional to 487,138,217.40, 730,707,326.10 and 438,765,276.60

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Solution

The fourth proportional to 487,138,217.40, 730,707,326.10 and 438,765,276.60 is: 658,147,914.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,138,217.40 : 730,707,326.10 = 438,765,276.60 : x
  2. Step 2: Convert to fraction form
    487,138,217.40/730,707,326.10 = 438,765,276.60/x
  3. Step 3: Cross multiply
    487,138,217.40x = 730,707,326.10 × 438,765,276.60
  4. Step 4: Simplify right side
    487,138,217.40x = 320,609,002,049,912,896
  5. Step 5: Solve for x
    x = 320,609,002,049,912,896/487,138,217.40
  6. Step 6: Final answer
    x = 658,147,914.90

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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.