Home / 1,320,076,005.10-1,980,114,007.65-664,773,822.70

Finding the Fourth Proportional to 1,320,076,005.10, 1,980,114,007.65 and 664,773,822.70

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Solution

The fourth proportional to 1,320,076,005.10, 1,980,114,007.65 and 664,773,822.70 is: 997,160,734.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,320,076,005.10 : 1,980,114,007.65 = 664,773,822.70 : x
  2. Step 2: Convert to fraction form
    1,320,076,005.10/1,980,114,007.65 = 664,773,822.70/x
  3. Step 3: Cross multiply
    1,320,076,005.10x = 1,980,114,007.65 × 664,773,822.70
  4. Step 4: Simplify right side
    1,320,076,005.10x = 1,316,327,958,247,307,776
  5. Step 5: Solve for x
    x = 1,316,327,958,247,307,776/1,320,076,005.10
  6. Step 6: Final answer
    x = 997,160,734.05

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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.