Home / 519,499,987.21-716,981,306.37-318,521,309.07

Finding the Fourth Proportional to 519,499,987.21, 716,981,306.37 and 318,521,309.07

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Solution

The fourth proportional to 519,499,987.21, 716,981,306.37 and 318,521,309.07 is: 439,603,137.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,499,987.21 : 716,981,306.37 = 318,521,309.07 : x
  2. Step 2: Convert to fraction form
    519,499,987.21/716,981,306.37 = 318,521,309.07/x
  3. Step 3: Cross multiply
    519,499,987.21x = 716,981,306.37 × 318,521,309.07
  4. Step 4: Simplify right side
    519,499,987.21x = 228,373,824,283,691,136
  5. Step 5: Solve for x
    x = 228,373,824,283,691,136/519,499,987.21
  6. Step 6: Final answer
    x = 439,603,137.45

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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.