Home / 782,076,809.60-1,170,091,905.60-509,979,017.60

Finding the Fourth Proportional to 782,076,809.60, 1,170,091,905.60 and 509,979,017.60

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Solution

The fourth proportional to 782,076,809.60, 1,170,091,905.60 and 509,979,017.60 is: 762,997,078.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    782,076,809.60 : 1,170,091,905.60 = 509,979,017.60 : x
  2. Step 2: Convert to fraction form
    782,076,809.60/1,170,091,905.60 = 509,979,017.60/x
  3. Step 3: Cross multiply
    782,076,809.60x = 1,170,091,905.60 × 509,979,017.60
  4. Step 4: Simplify right side
    782,076,809.60x = 596,722,320,519,599,872
  5. Step 5: Solve for x
    x = 596,722,320,519,599,872/782,076,809.60
  6. Step 6: Final answer
    x = 762,997,078.03

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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.