Home / 677,942,789.60-1,016,914,184.40-637,128,120.80

Finding the Fourth Proportional to 677,942,789.60, 1,016,914,184.40 and 637,128,120.80

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Solution

The fourth proportional to 677,942,789.60, 1,016,914,184.40 and 637,128,120.80 is: 955,692,181.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    677,942,789.60 : 1,016,914,184.40 = 637,128,120.80 : x
  2. Step 2: Convert to fraction form
    677,942,789.60/1,016,914,184.40 = 637,128,120.80/x
  3. Step 3: Cross multiply
    677,942,789.60x = 1,016,914,184.40 × 637,128,120.80
  4. Step 4: Simplify right side
    677,942,789.60x = 647,904,623,321,636,608
  5. Step 5: Solve for x
    x = 647,904,623,321,636,608/677,942,789.60
  6. Step 6: Final answer
    x = 955,692,181.20

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1.5x scale

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.