Home / 808,698,812.78-1,213,051,772.91-256,003,956.38

Finding the Fourth Proportional to 808,698,812.78, 1,213,051,772.91 and 256,003,956.38

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Solution

The fourth proportional to 808,698,812.78, 1,213,051,772.91 and 256,003,956.38 is: 384,007,059.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,698,812.78 : 1,213,051,772.91 = 256,003,956.38 : x
  2. Step 2: Convert to fraction form
    808,698,812.78/1,213,051,772.91 = 256,003,956.38/x
  3. Step 3: Cross multiply
    808,698,812.78x = 1,213,051,772.91 × 256,003,956.38
  4. Step 4: Simplify right side
    808,698,812.78x = 310,546,053,158,733,312
  5. Step 5: Solve for x
    x = 310,546,053,158,733,312/808,698,812.78
  6. Step 6: Final answer
    x = 384,007,059.55

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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.