Home / 520,243,015,660.65-717,877,134,789.85-288,766,291,229.20

Finding the Fourth Proportional to 520,243,015,660.65, 717,877,134,789.85 and 288,766,291,229.20

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Solution

The fourth proportional to 520,243,015,660.65, 717,877,134,789.85 and 288,766,291,229.20 is: 398,465,162,493.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,243,015,660.65 : 717,877,134,789.85 = 288,766,291,229.20 : x
  2. Step 2: Convert to fraction form
    520,243,015,660.65/717,877,134,789.85 = 288,766,291,229.20/x
  3. Step 3: Cross multiply
    520,243,015,660.65x = 717,877,134,789.85 × 288,766,291,229.20
  4. Step 4: Simplify right side
    520,243,015,660.65x = 207,298,717,771,509,476,098,048
  5. Step 5: Solve for x
    x = 207,298,717,771,509,476,098,048/520,243,015,660.65
  6. Step 6: Final answer
    x = 398,465,162,493.85

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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.