Home / 1,328,076,012.80-1,992,114,019.20-407,998,114.40

Finding the Fourth Proportional to 1,328,076,012.80, 1,992,114,019.20 and 407,998,114.40

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Solution

The fourth proportional to 1,328,076,012.80, 1,992,114,019.20 and 407,998,114.40 is: 611,997,171.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,328,076,012.80 : 1,992,114,019.20 = 407,998,114.40 : x
  2. Step 2: Convert to fraction form
    1,328,076,012.80/1,992,114,019.20 = 407,998,114.40/x
  3. Step 3: Cross multiply
    1,328,076,012.80x = 1,992,114,019.20 × 407,998,114.40
  4. Step 4: Simplify right side
    1,328,076,012.80x = 812,778,763,503,405,312
  5. Step 5: Solve for x
    x = 812,778,763,503,405,312/1,328,076,012.80
  6. Step 6: Final answer
    x = 611,997,171.60

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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.