Home / 784,365,203.21-1,082,389,064.75-449,597,730.20

Finding the Fourth Proportional to 784,365,203.21, 1,082,389,064.75 and 449,597,730.20

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Solution

The fourth proportional to 784,365,203.21, 1,082,389,064.75 and 449,597,730.20 is: 620,424,854.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    784,365,203.21 : 1,082,389,064.75 = 449,597,730.20 : x
  2. Step 2: Convert to fraction form
    784,365,203.21/1,082,389,064.75 = 449,597,730.20/x
  3. Step 3: Cross multiply
    784,365,203.21x = 1,082,389,064.75 × 449,597,730.20
  4. Step 4: Simplify right side
    784,365,203.21x = 486,639,666,704,900,800
  5. Step 5: Solve for x
    x = 486,639,666,704,900,800/784,365,203.21
  6. Step 6: Final answer
    x = 620,424,854.03

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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.