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Finding the Fourth Proportional to 517,893,832.62, 714,693,775.74 and 279,739,015.94

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Solution

The fourth proportional to 517,893,832.62, 714,693,775.74 and 279,739,015.94 is: 386,039,996.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    517,893,832.62 : 714,693,775.74 = 279,739,015.94 : x
  2. Step 2: Convert to fraction form
    517,893,832.62/714,693,775.74 = 279,739,015.94/x
  3. Step 3: Cross multiply
    517,893,832.62x = 714,693,775.74 × 279,739,015.94
  4. Step 4: Simplify right side
    517,893,832.62x = 199,927,733,523,950,656
  5. Step 5: Solve for x
    x = 199,927,733,523,950,656/517,893,832.62
  6. Step 6: Final answer
    x = 386,039,996.87

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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.