Home / 728,712,320.40-1,093,068,480.60-658,420,390.80

Finding the Fourth Proportional to 728,712,320.40, 1,093,068,480.60 and 658,420,390.80

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Solution

The fourth proportional to 728,712,320.40, 1,093,068,480.60 and 658,420,390.80 is: 987,630,586.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,712,320.40 : 1,093,068,480.60 = 658,420,390.80 : x
  2. Step 2: Convert to fraction form
    728,712,320.40/1,093,068,480.60 = 658,420,390.80/x
  3. Step 3: Cross multiply
    728,712,320.40x = 1,093,068,480.60 × 658,420,390.80
  4. Step 4: Simplify right side
    728,712,320.40x = 719,698,576,167,814,144
  5. Step 5: Solve for x
    x = 719,698,576,167,814,144/728,712,320.40
  6. Step 6: Final answer
    x = 987,630,586.20

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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.