Home / 647,222,101.68-971,524,025.10-278,938,803.06

Finding the Fourth Proportional to 647,222,101.68, 971,524,025.10 and 278,938,803.06

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Solution

The fourth proportional to 647,222,101.68, 971,524,025.10 and 278,938,803.06 is: 418,705,955.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,222,101.68 : 971,524,025.10 = 278,938,803.06 : x
  2. Step 2: Convert to fraction form
    647,222,101.68/971,524,025.10 = 278,938,803.06/x
  3. Step 3: Cross multiply
    647,222,101.68x = 971,524,025.10 × 278,938,803.06
  4. Step 4: Simplify right side
    647,222,101.68x = 270,995,748,705,427,392
  5. Step 5: Solve for x
    x = 270,995,748,705,427,392/647,222,101.68
  6. Step 6: Final answer
    x = 418,705,955.81

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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.