Home / 509,959,397.55-765,095,208.43-261,140,827.76

Finding the Fourth Proportional to 509,959,397.55, 765,095,208.43 and 261,140,827.76

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Solution

The fourth proportional to 509,959,397.55, 765,095,208.43 and 261,140,827.76 is: 391,791,183.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,959,397.55 : 765,095,208.43 = 261,140,827.76 : x
  2. Step 2: Convert to fraction form
    509,959,397.55/765,095,208.43 = 261,140,827.76/x
  3. Step 3: Cross multiply
    509,959,397.55x = 765,095,208.43 × 261,140,827.76
  4. Step 4: Simplify right side
    509,959,397.55x = 199,797,596,044,619,904
  5. Step 5: Solve for x
    x = 199,797,596,044,619,904/509,959,397.55
  6. Step 6: Final answer
    x = 391,791,183.78

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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.