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Finding the Fourth Proportional to 564,905,745.72, 779,579,252.82 and 310,597,847.64

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Solution

The fourth proportional to 564,905,745.72, 779,579,252.82 and 310,597,847.64 is: 428,630,156.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    564,905,745.72 : 779,579,252.82 = 310,597,847.64 : x
  2. Step 2: Convert to fraction form
    564,905,745.72/779,579,252.82 = 310,597,847.64/x
  3. Step 3: Cross multiply
    564,905,745.72x = 779,579,252.82 × 310,597,847.64
  4. Step 4: Simplify right side
    564,905,745.72x = 242,135,637,990,691,392
  5. Step 5: Solve for x
    x = 242,135,637,990,691,392/564,905,745.72
  6. Step 6: Final answer
    x = 428,630,156.14

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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.