Home / 7,138,720,011.20-9,851,522,885.10-3,923,980,984.68

Finding the Fourth Proportional to 7,138,720,011.20, 9,851,522,885.10 and 3,923,980,984.68

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Solution

The fourth proportional to 7,138,720,011.20, 9,851,522,885.10 and 3,923,980,984.68 is: 5,415,142,828.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,138,720,011.20 : 9,851,522,885.10 = 3,923,980,984.68 : x
  2. Step 2: Convert to fraction form
    7,138,720,011.20/9,851,522,885.10 = 3,923,980,984.68/x
  3. Step 3: Cross multiply
    7,138,720,011.20x = 9,851,522,885.10 × 3,923,980,984.68
  4. Step 4: Simplify right side
    7,138,720,011.20x = 38,657,188,471,309,688,832
  5. Step 5: Solve for x
    x = 38,657,188,471,309,688,832/7,138,720,011.20
  6. Step 6: Final answer
    x = 5,415,142,828.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.