Home / 378,902,280.95-568,353,421.43-256,458,274.55

Finding the Fourth Proportional to 378,902,280.95, 568,353,421.43 and 256,458,274.55

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Solution

The fourth proportional to 378,902,280.95, 568,353,421.43 and 256,458,274.55 is: 384,687,411.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,902,280.95 : 568,353,421.43 = 256,458,274.55 : x
  2. Step 2: Convert to fraction form
    378,902,280.95/568,353,421.43 = 256,458,274.55/x
  3. Step 3: Cross multiply
    378,902,280.95x = 568,353,421.43 × 256,458,274.55
  4. Step 4: Simplify right side
    378,902,280.95x = 145,758,937,793,244,512
  5. Step 5: Solve for x
    x = 145,758,937,793,244,512/378,902,280.95
  6. Step 6: Final answer
    x = 384,687,411.83

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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.