Home / 518,005,556.55-777,253,378.94-268,878,416.04

Finding the Fourth Proportional to 518,005,556.55, 777,253,378.94 and 268,878,416.04

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Solution

The fourth proportional to 518,005,556.55, 777,253,378.94 and 268,878,416.04 is: 403,444,817.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,005,556.55 : 777,253,378.94 = 268,878,416.04 : x
  2. Step 2: Convert to fraction form
    518,005,556.55/777,253,378.94 = 268,878,416.04/x
  3. Step 3: Cross multiply
    518,005,556.55x = 777,253,378.94 × 268,878,416.04
  4. Step 4: Simplify right side
    518,005,556.55x = 208,986,657,389,780,704
  5. Step 5: Solve for x
    x = 208,986,657,389,780,704/518,005,556.55
  6. Step 6: Final answer
    x = 403,444,817.82

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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.