Home / 520,243,015,687.10-717,877,134,826.37-288,766,291,255.70

Finding the Fourth Proportional to 520,243,015,687.10, 717,877,134,826.37 and 288,766,291,255.70

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Solution

The fourth proportional to 520,243,015,687.10, 717,877,134,826.37 and 288,766,291,255.70 is: 398,465,162,530.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,243,015,687.10 : 717,877,134,826.37 = 288,766,291,255.70 : x
  2. Step 2: Convert to fraction form
    520,243,015,687.10/717,877,134,826.37 = 288,766,291,255.70/x
  3. Step 3: Cross multiply
    520,243,015,687.10x = 717,877,134,826.37 × 288,766,291,255.70
  4. Step 4: Simplify right side
    520,243,015,687.10x = 207,298,717,801,078,983,753,728
  5. Step 5: Solve for x
    x = 207,298,717,801,078,983,753,728/520,243,015,687.10
  6. Step 6: Final answer
    x = 398,465,162,530.43

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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.