Home / 645,327.84-890,574.02-354,951.68

Finding the Fourth Proportional to 645,327.84, 890,574.02 and 354,951.68

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Solution

The fourth proportional to 645,327.84, 890,574.02 and 354,951.68 is: 489,845.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,327.84 : 890,574.02 = 354,951.68 : x
  2. Step 2: Convert to fraction form
    645,327.84/890,574.02 = 354,951.68/x
  3. Step 3: Cross multiply
    645,327.84x = 890,574.02 × 354,951.68
  4. Step 4: Simplify right side
    645,327.84x = 316,110,743,675.97
  5. Step 5: Solve for x
    x = 316,110,743,675.97/645,327.84
  6. Step 6: Final answer
    x = 489,845.20

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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.