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Finding the Fourth Proportional to 668,619,593.34, 922,690,223.91 and 371,260,376.70

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Solution

The fourth proportional to 668,619,593.34, 922,690,223.91 and 371,260,376.70 is: 512,336,646.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,619,593.34 : 922,690,223.91 = 371,260,376.70 : x
  2. Step 2: Convert to fraction form
    668,619,593.34/922,690,223.91 = 371,260,376.70/x
  3. Step 3: Cross multiply
    668,619,593.34x = 922,690,223.91 × 371,260,376.70
  4. Step 4: Simplify right side
    668,619,593.34x = 342,558,320,106,233,920
  5. Step 5: Solve for x
    x = 342,558,320,106,233,920/668,619,593.34
  6. Step 6: Final answer
    x = 512,336,646.31

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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.