Home / 645,110.73-890,217.95-358,610.49

Finding the Fourth Proportional to 645,110.73, 890,217.95 and 358,610.49

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Solution

The fourth proportional to 645,110.73, 890,217.95 and 358,610.49 is: 494,863.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,110.73 : 890,217.95 = 358,610.49 : x
  2. Step 2: Convert to fraction form
    645,110.73/890,217.95 = 358,610.49/x
  3. Step 3: Cross multiply
    645,110.73x = 890,217.95 × 358,610.49
  4. Step 4: Simplify right side
    645,110.73x = 319,241,493,463.24
  5. Step 5: Solve for x
    x = 319,241,493,463.24/645,110.73
  6. Step 6: Final answer
    x = 494,863.10

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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.