Home / 1,320,213,617.40-1,980,320,426.10-1,170,984,984.60

Finding the Fourth Proportional to 1,320,213,617.40, 1,980,320,426.10 and 1,170,984,984.60

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Solution

The fourth proportional to 1,320,213,617.40, 1,980,320,426.10 and 1,170,984,984.60 is: 1,756,477,476.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,320,213,617.40 : 1,980,320,426.10 = 1,170,984,984.60 : x
  2. Step 2: Convert to fraction form
    1,320,213,617.40/1,980,320,426.10 = 1,170,984,984.60/x
  3. Step 3: Cross multiply
    1,320,213,617.40x = 1,980,320,426.10 × 1,170,984,984.60
  4. Step 4: Simplify right side
    1,320,213,617.40x = 2,318,925,483,659,773,440
  5. Step 5: Solve for x
    x = 2,318,925,483,659,773,440/1,320,213,617.40
  6. Step 6: Final answer
    x = 1,756,477,476.90

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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.