Home / 1,447,045,517.12-1,996,923,798.64-811,878,326.88

Finding the Fourth Proportional to 1,447,045,517.12, 1,996,923,798.64 and 811,878,326.88

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Solution

The fourth proportional to 1,447,045,517.12, 1,996,923,798.64 and 811,878,326.88 is: 1,120,392,643.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,447,045,517.12 : 1,996,923,798.64 = 811,878,326.88 : x
  2. Step 2: Convert to fraction form
    1,447,045,517.12/1,996,923,798.64 = 811,878,326.88/x
  3. Step 3: Cross multiply
    1,447,045,517.12x = 1,996,923,798.64 × 811,878,326.88
  4. Step 4: Simplify right side
    1,447,045,517.12x = 1,621,259,152,546,697,216
  5. Step 5: Solve for x
    x = 1,621,259,152,546,697,216/1,447,045,517.12
  6. Step 6: Final answer
    x = 1,120,392,643.75

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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.