Home / 1,255,815,953.78-1,884,007,721.62-415,456,726.10

Finding the Fourth Proportional to 1,255,815,953.78, 1,884,007,721.62 and 415,456,726.10

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Solution

The fourth proportional to 1,255,815,953.78, 1,884,007,721.62 and 415,456,726.10 is: 623,278,974.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,255,815,953.78 : 1,884,007,721.62 = 415,456,726.10 : x
  2. Step 2: Convert to fraction form
    1,255,815,953.78/1,884,007,721.62 = 415,456,726.10/x
  3. Step 3: Cross multiply
    1,255,815,953.78x = 1,884,007,721.62 × 415,456,726.10
  4. Step 4: Simplify right side
    1,255,815,953.78x = 782,723,679,965,935,232
  5. Step 5: Solve for x
    x = 782,723,679,965,935,232/1,255,815,953.78
  6. Step 6: Final answer
    x = 623,278,974.61

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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.