Home / 511,056,646.40-766,584,969.60-280,936,812.80

Finding the Fourth Proportional to 511,056,646.40, 766,584,969.60 and 280,936,812.80

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Solution

The fourth proportional to 511,056,646.40, 766,584,969.60 and 280,936,812.80 is: 421,405,219.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,056,646.40 : 766,584,969.60 = 280,936,812.80 : x
  2. Step 2: Convert to fraction form
    511,056,646.40/766,584,969.60 = 280,936,812.80/x
  3. Step 3: Cross multiply
    511,056,646.40x = 766,584,969.60 × 280,936,812.80
  4. Step 4: Simplify right side
    511,056,646.40x = 215,361,938,099,808,896
  5. Step 5: Solve for x
    x = 215,361,938,099,808,896/511,056,646.40
  6. Step 6: Final answer
    x = 421,405,219.20

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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.