Home / 613,780,613.64-921,252,981.39-379,903,869.12

Finding the Fourth Proportional to 613,780,613.64, 921,252,981.39 and 379,903,869.12

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Solution

The fourth proportional to 613,780,613.64, 921,252,981.39 and 379,903,869.12 is: 570,216,074.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,780,613.64 : 921,252,981.39 = 379,903,869.12 : x
  2. Step 2: Convert to fraction form
    613,780,613.64/921,252,981.39 = 379,903,869.12/x
  3. Step 3: Cross multiply
    613,780,613.64x = 921,252,981.39 × 379,903,869.12
  4. Step 4: Simplify right side
    613,780,613.64x = 349,987,572,068,396,352
  5. Step 5: Solve for x
    x = 349,987,572,068,396,352/613,780,613.64
  6. Step 6: Final answer
    x = 570,216,074.43

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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.