Home / 645,327.34-890,573.30-354,951.16

Finding the Fourth Proportional to 645,327.34, 890,573.30 and 354,951.16

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Solution

The fourth proportional to 645,327.34, 890,573.30 and 354,951.16 is: 489,844.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,327.34 : 890,573.30 = 354,951.16 : x
  2. Step 2: Convert to fraction form
    645,327.34/890,573.30 = 354,951.16/x
  3. Step 3: Cross multiply
    645,327.34x = 890,573.30 × 354,951.16
  4. Step 4: Simplify right side
    645,327.34x = 316,110,025,900.03
  5. Step 5: Solve for x
    x = 316,110,025,900.03/645,327.34
  6. Step 6: Final answer
    x = 489,844.47

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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.