Home / 645,333.40-890,581.73-354,957.25

Finding the Fourth Proportional to 645,333.40, 890,581.73 and 354,957.25

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Solution

The fourth proportional to 645,333.40, 890,581.73 and 354,957.25 is: 489,852.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,333.40 : 890,581.73 = 354,957.25 : x
  2. Step 2: Convert to fraction form
    645,333.40/890,581.73 = 354,957.25/x
  3. Step 3: Cross multiply
    645,333.40x = 890,581.73 × 354,957.25
  4. Step 4: Simplify right side
    645,333.40x = 316,118,435,553.35
  5. Step 5: Solve for x
    x = 316,118,435,553.35/645,333.40
  6. Step 6: Final answer
    x = 489,852.90

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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.