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Finding the Fourth Proportional to 684,962,931.34, 945,248,845.34 and 371,697,145.31

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Solution

The fourth proportional to 684,962,931.34, 945,248,845.34 and 371,697,145.31 is: 512,942,060.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,962,931.34 : 945,248,845.34 = 371,697,145.31 : x
  2. Step 2: Convert to fraction form
    684,962,931.34/945,248,845.34 = 371,697,145.31/x
  3. Step 3: Cross multiply
    684,962,931.34x = 945,248,845.34 × 371,697,145.31
  4. Step 4: Simplify right side
    684,962,931.34x = 351,346,297,420,451,712
  5. Step 5: Solve for x
    x = 351,346,297,420,451,712/684,962,931.34
  6. Step 6: Final answer
    x = 512,942,060.58

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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.