Home / 645,327.46-890,573.50-354,951.31

Finding the Fourth Proportional to 645,327.46, 890,573.50 and 354,951.31

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Solution

The fourth proportional to 645,327.46, 890,573.50 and 354,951.31 is: 489,844.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,327.46 : 890,573.50 = 354,951.31 : x
  2. Step 2: Convert to fraction form
    645,327.46/890,573.50 = 354,951.31/x
  3. Step 3: Cross multiply
    645,327.46x = 890,573.50 × 354,951.31
  4. Step 4: Simplify right side
    645,327.46x = 316,110,226,023.42
  5. Step 5: Solve for x
    x = 316,110,226,023.42/645,327.46
  6. Step 6: Final answer
    x = 489,844.68

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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.