Home / 728,712,128.40-1,093,068,192.60-658,420,198.80

Finding the Fourth Proportional to 728,712,128.40, 1,093,068,192.60 and 658,420,198.80

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Solution

The fourth proportional to 728,712,128.40, 1,093,068,192.60 and 658,420,198.80 is: 987,630,298.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,712,128.40 : 1,093,068,192.60 = 658,420,198.80 : x
  2. Step 2: Convert to fraction form
    728,712,128.40/1,093,068,192.60 = 658,420,198.80/x
  3. Step 3: Cross multiply
    728,712,128.40x = 1,093,068,192.60 × 658,420,198.80
  4. Step 4: Simplify right side
    728,712,128.40x = 719,698,176,673,648,512
  5. Step 5: Solve for x
    x = 719,698,176,673,648,512/728,712,128.40
  6. Step 6: Final answer
    x = 987,630,298.20

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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.