Home / 1,679,620,666.80-2,519,431,000.20-515,079,908.40

Finding the Fourth Proportional to 1,679,620,666.80, 2,519,431,000.20 and 515,079,908.40

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Solution

The fourth proportional to 1,679,620,666.80, 2,519,431,000.20 and 515,079,908.40 is: 772,619,862.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,679,620,666.80 : 2,519,431,000.20 = 515,079,908.40 : x
  2. Step 2: Convert to fraction form
    1,679,620,666.80/2,519,431,000.20 = 515,079,908.40/x
  3. Step 3: Cross multiply
    1,679,620,666.80x = 2,519,431,000.20 × 515,079,908.40
  4. Step 4: Simplify right side
    1,679,620,666.80x = 1,297,708,288,803,136,256
  5. Step 5: Solve for x
    x = 1,297,708,288,803,136,256/1,679,620,666.80
  6. Step 6: Final answer
    x = 772,619,862.60

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1.5x scale

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.