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Finding the Fourth Proportional to 668,662,464.12, 922,757,098.64 and 371,303,794.20

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Solution

The fourth proportional to 668,662,464.12, 922,757,098.64 and 371,303,794.20 is: 512,400,845.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,662,464.12 : 922,757,098.64 = 371,303,794.20 : x
  2. Step 2: Convert to fraction form
    668,662,464.12/922,757,098.64 = 371,303,794.20/x
  3. Step 3: Cross multiply
    668,662,464.12x = 922,757,098.64 × 371,303,794.20
  4. Step 4: Simplify right side
    668,662,464.12x = 342,623,211,850,015,616
  5. Step 5: Solve for x
    x = 342,623,211,850,015,616/668,662,464.12
  6. Step 6: Final answer
    x = 512,400,845.32

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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.