Home / 511,056,644.90-766,584,967.35-280,936,811.30

Finding the Fourth Proportional to 511,056,644.90, 766,584,967.35 and 280,936,811.30

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Solution

The fourth proportional to 511,056,644.90, 766,584,967.35 and 280,936,811.30 is: 421,405,216.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,056,644.90 : 766,584,967.35 = 280,936,811.30 : x
  2. Step 2: Convert to fraction form
    511,056,644.90/766,584,967.35 = 280,936,811.30/x
  3. Step 3: Cross multiply
    511,056,644.90x = 766,584,967.35 × 280,936,811.30
  4. Step 4: Simplify right side
    511,056,644.90x = 215,361,936,317,823,616
  5. Step 5: Solve for x
    x = 215,361,936,317,823,616/511,056,644.90
  6. Step 6: Final answer
    x = 421,405,216.95

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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.