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Finding the Fourth Proportional to 702,879,791.52, 969,953,111.78 and 385,329,179.40

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Solution

The fourth proportional to 702,879,791.52, 969,953,111.78 and 385,329,179.40 is: 531,742,754.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    702,879,791.52 : 969,953,111.78 = 385,329,179.40 : x
  2. Step 2: Convert to fraction form
    702,879,791.52/969,953,111.78 = 385,329,179.40/x
  3. Step 3: Cross multiply
    702,879,791.52x = 969,953,111.78 × 385,329,179.40
  4. Step 4: Simplify right side
    702,879,791.52x = 373,751,236,618,663,808
  5. Step 5: Solve for x
    x = 373,751,236,618,663,808/702,879,791.52
  6. Step 6: Final answer
    x = 531,742,754.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.