Home / 520,620,658.10-780,935,563.46-132,443,899.03

Finding the Fourth Proportional to 520,620,658.10, 780,935,563.46 and 132,443,899.03

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Solution

The fourth proportional to 520,620,658.10, 780,935,563.46 and 132,443,899.03 is: 198,667,012.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,620,658.10 : 780,935,563.46 = 132,443,899.03 : x
  2. Step 2: Convert to fraction form
    520,620,658.10/780,935,563.46 = 132,443,899.03/x
  3. Step 3: Cross multiply
    520,620,658.10x = 780,935,563.46 × 132,443,899.03
  4. Step 4: Simplify right side
    520,620,658.10x = 103,430,150,917,139,680
  5. Step 5: Solve for x
    x = 103,430,150,917,139,680/520,620,658.10
  6. Step 6: Final answer
    x = 198,667,012.74

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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.