Home / 517,385,659.40-776,078,489.10-258,640,814.60

Finding the Fourth Proportional to 517,385,659.40, 776,078,489.10 and 258,640,814.60

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Solution

The fourth proportional to 517,385,659.40, 776,078,489.10 and 258,640,814.60 is: 387,961,221.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    517,385,659.40 : 776,078,489.10 = 258,640,814.60 : x
  2. Step 2: Convert to fraction form
    517,385,659.40/776,078,489.10 = 258,640,814.60/x
  3. Step 3: Cross multiply
    517,385,659.40x = 776,078,489.10 × 258,640,814.60
  4. Step 4: Simplify right side
    517,385,659.40x = 200,725,572,614,361,216
  5. Step 5: Solve for x
    x = 200,725,572,614,361,216/517,385,659.40
  6. Step 6: Final answer
    x = 387,961,221.90

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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.