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Finding the Fourth Proportional to 633,809,165.76, 874,332,398.88 and 422,479,880.64

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Solution

The fourth proportional to 633,809,165.76, 874,332,398.88 and 422,479,880.64 is: 582,806,099.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    633,809,165.76 : 874,332,398.88 = 422,479,880.64 : x
  2. Step 2: Convert to fraction form
    633,809,165.76/874,332,398.88 = 422,479,880.64/x
  3. Step 3: Cross multiply
    633,809,165.76x = 874,332,398.88 × 422,479,880.64
  4. Step 4: Simplify right side
    633,809,165.76x = 369,387,847,518,507,264
  5. Step 5: Solve for x
    x = 369,387,847,518,507,264/633,809,165.76
  6. Step 6: Final answer
    x = 582,806,099.18

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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.