Home / 486,132,878.39-729,200,438.56-280,217,094.87

Finding the Fourth Proportional to 486,132,878.39, 729,200,438.56 and 280,217,094.87

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Solution

The fourth proportional to 486,132,878.39, 729,200,438.56 and 280,217,094.87 is: 420,326,288.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,132,878.39 : 729,200,438.56 = 280,217,094.87 : x
  2. Step 2: Convert to fraction form
    486,132,878.39/729,200,438.56 = 280,217,094.87/x
  3. Step 3: Cross multiply
    486,132,878.39x = 729,200,438.56 × 280,217,094.87
  4. Step 4: Simplify right side
    486,132,878.39x = 204,334,428,471,213,120
  5. Step 5: Solve for x
    x = 204,334,428,471,213,120/486,132,878.39
  6. Step 6: Final answer
    x = 420,326,288.46

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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.