Home / 782,076,807.10-1,170,091,901.85-509,979,015.10

Finding the Fourth Proportional to 782,076,807.10, 1,170,091,901.85 and 509,979,015.10

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Solution

The fourth proportional to 782,076,807.10, 1,170,091,901.85 and 509,979,015.10 is: 762,997,074.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    782,076,807.10 : 1,170,091,901.85 = 509,979,015.10 : x
  2. Step 2: Convert to fraction form
    782,076,807.10/1,170,091,901.85 = 509,979,015.10/x
  3. Step 3: Cross multiply
    782,076,807.10x = 1,170,091,901.85 × 509,979,015.10
  4. Step 4: Simplify right side
    782,076,807.10x = 596,722,315,681,948,800
  5. Step 5: Solve for x
    x = 596,722,315,681,948,800/782,076,807.10
  6. Step 6: Final answer
    x = 762,997,074.28

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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.