Home / 520,243,015,658.40-717,877,134,786.75-288,766,291,226.95

Finding the Fourth Proportional to 520,243,015,658.40, 717,877,134,786.75 and 288,766,291,226.95

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Solution

The fourth proportional to 520,243,015,658.40, 717,877,134,786.75 and 288,766,291,226.95 is: 398,465,162,490.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,243,015,658.40 : 717,877,134,786.75 = 288,766,291,226.95 : x
  2. Step 2: Convert to fraction form
    520,243,015,658.40/717,877,134,786.75 = 288,766,291,226.95/x
  3. Step 3: Cross multiply
    520,243,015,658.40x = 717,877,134,786.75 × 288,766,291,226.95
  4. Step 4: Simplify right side
    520,243,015,658.40x = 207,298,717,768,999,101,267,968
  5. Step 5: Solve for x
    x = 207,298,717,768,999,101,267,968/520,243,015,658.40
  6. Step 6: Final answer
    x = 398,465,162,490.74

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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.