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Finding the Fourth Proportional to 668,515.12, 922,558 and 362,591.92

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Solution

The fourth proportional to 668,515.12, 922,558 and 362,591.92 is: 500,380.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,515.12 : 922,558 = 362,591.92 : x
  2. Step 2: Convert to fraction form
    668,515.12/922,558 = 362,591.92/x
  3. Step 3: Cross multiply
    668,515.12x = 922,558 × 362,591.92
  4. Step 4: Simplify right side
    668,515.12x = 334,512,076,531.36
  5. Step 5: Solve for x
    x = 334,512,076,531.36/668,515.12
  6. Step 6: Final answer
    x = 500,380.72

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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.